CVE-2026-100909

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Source
https://cve.org/CVERecord?id=CVE-2026-100909
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100909.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-100909
Aliases
Published
2026-09-28T04:30:10Z
Modified
2026-10-21T02:54:26Z
Severity
  • 5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
OctoberCMS ResizeImages.php getSourcePathForResize server-side request forgery
Details

A vulnerability was found in OctoberCMS up to 4.1.19/4.2.25/4.3.4. The impacted element is the function getSourcePathForResize of the file modules/system/classes/ResizeImages.php. The manipulation of the argument realSourcePath results in server-side request forgery. The attack may be performed from remote. The exploit has been made public and could be used. Upgrading to version 4.3.5 and 4.4.0 is sufficient to resolve this issue. The patch is identified as 0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce387f58. The affected component should be upgraded.

Database specific 
{
    "cna_assigner":  "VulDB",
    "cwe_ids":  [
        "CWE-918"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100909.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "introduced":  "4.1.1"
                        },
                        {
                            "last_affected":  "4.1.1"
                        },
                        {
                            "introduced":  "4.1.2"
                        },
                        {
                            "last_affected":  "4.1.2"
                        },
                        {
                            "introduced":  "4.1.3"
                        },
                        {
                            "last_affected":  "4.1.3"
                        },
                        {
                            "introduced":  "4.1.6"
                        },
                        {
                            "last_affected":  "4.1.6"
                        },
                        {
                            "introduced":  "4.1.10"
                        },
                        {
                            "last_affected":  "4.1.10"
                        },
                        {
                            "introduced":  "4.1.11"
                        },
                        {
                            "last_affected":  "4.1.11"
                        },
                        {
                            "introduced":  "4.1.12"
                        },
                        {
                            "last_affected":  "4.1.12"
                        },
                        {
                            "introduced":  "4.1.13"
                        },
                        {
                            "last_affected":  "4.1.13"
                        },
                        {
                            "introduced":  "4.1.14"
                        },
                        {
                            "last_affected":  "4.1.14"
                        },
                        {
                            "introduced":  "4.1.15"
                        },
                        {
                            "last_affected":  "4.1.15"
                        },
                        {
                            "introduced":  "4.1.16"
                        },
                        {
                            "last_affected":  "4.1.16"
                        },
                        {
                            "introduced":  "4.2.1"
                        },
                        {
                            "last_affected":  "4.2.1"
                        },
                        {
                            "introduced":  "4.2.2"
                        },
                        {
                            "last_affected":  "4.2.2"
                        },
                        {
                            "introduced":  "4.2.3"
                        },
                        {
                            "last_affected":  "4.2.3"
                        },
                        {
                            "introduced":  "4.2.6"
                        },
                        {
                            "last_affected":  "4.2.6"
                        },
                        {
                            "introduced":  "4.2.7"
                        },
                        {
                            "last_affected":  "4.2.7"
                        },
                        {
                            "introduced":  "4.2.8"
                        },
                        {
                            "last_affected":  "4.2.8"
                        },
                        {
                            "introduced":  "4.3.3"
                        },
                        {
                            "last_affected":  "4.3.3"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandaloneSingleVersion"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/octobercms/october

Affected ranges

Type
GIT
Repo
https://github.com/octobercms/october
Events
Introduced
141179aee18ed9f483d675183b51498d882f64a5
Fixed
0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce387f58
Fixed
1024483d1e9ff04bf8b3b1ede7b02db018a385c7
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "4.1.0"
                },
                {
                    "last_affected":  "4.1.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.1.4"
                },
                {
                    "last_affected":  "4.1.4"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.1.5"
                },
                {
                    "last_affected":  "4.1.5"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.1.7"
                },
                {
                    "last_affected":  "4.1.7"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.1.8"
                },
                {
                    "last_affected":  "4.1.8"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.1.9"
                },
                {
                    "last_affected":  "4.1.9"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.1.17"
                },
                {
                    "last_affected":  "4.1.17"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.1.18"
                },
                {
                    "last_affected":  "4.1.18"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.1.19"
                },
                {
                    "last_affected":  "4.1.19"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.0"
                },
                {
                    "last_affected":  "4.2.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.4"
                },
                {
                    "last_affected":  "4.2.4"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.5"
                },
                {
                    "last_affected":  "4.2.5"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.9"
                },
                {
                    "last_affected":  "4.2.9"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.10"
                },
                {
                    "last_affected":  "4.2.10"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.11"
                },
                {
                    "last_affected":  "4.2.11"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.12"
                },
                {
                    "last_affected":  "4.2.12"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.13"
                },
                {
                    "last_affected":  "4.2.13"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.14"
                },
                {
                    "last_affected":  "4.2.14"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.15"
                },
                {
                    "last_affected":  "4.2.15"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.16"
                },
                {
                    "last_affected":  "4.2.16"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.17"
                },
                {
                    "last_affected":  "4.2.17"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.18"
                },
                {
                    "last_affected":  "4.2.18"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.19"
                },
                {
                    "last_affected":  "4.2.19"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.20"
                },
                {
                    "last_affected":  "4.2.20"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.21"
                },
                {
                    "last_affected":  "4.2.21"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.22"
                },
                {
                    "last_affected":  "4.2.22"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.23"
                },
                {
                    "last_affected":  "4.2.23"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.24"
                },
                {
                    "last_affected":  "4.2.24"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.2.25"
                },
                {
                    "last_affected":  "4.2.25"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.3.0"
                },
                {
                    "last_affected":  "4.3.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.3.1"
                },
                {
                    "last_affected":  "4.3.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.3.2"
                },
                {
                    "last_affected":  "4.3.2"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "introduced":  "4.3.4"
                },
                {
                    "last_affected":  "4.3.4"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "fixed":  "0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce387f58"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v4.3.5",
            "range":  [
                {
                    "fixed":  "1024483d1e9ff04bf8b3b1ede7b02db018a385c7"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

4.*
4.1.0
4.1.17
4.1.18
4.1.19
4.1.4
4.1.5
4.1.7
4.1.8
4.1.9
4.2.0
4.2.10
4.2.11
4.2.12
4.2.13
4.2.14
4.2.15
4.2.16
4.2.17
4.2.18
4.2.19
4.2.20
4.2.21
4.2.22
4.2.23
4.2.25
4.2.4
4.2.5
4.2.9
4.3.0
4.3.1
4.3.2
4.3.4
v4.*
v4.1.0
v4.1.17
v4.1.18
v4.1.19
v4.1.4
v4.1.5
v4.1.7
v4.1.8
v4.1.9
v4.2.0
v4.2.10
v4.2.11
v4.2.12
v4.2.13
v4.2.14
v4.2.15
v4.2.16
v4.2.17
v4.2.18
v4.2.19
v4.2.20
v4.2.21
v4.2.22
v4.2.23
v4.2.24
v4.2.25
v4.2.4
v4.2.5
v4.2.9
v4.3.0
v4.3.1
v4.3.2
v4.3.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100909.json"