CVE-2026-53756

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Source
https://cve.org/CVERecord?id=CVE-2026-53756
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53756.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53756
Aliases
  • GHSA-xq97-53c2-vvfg
Published
2026-09-04T17:46:58Z
Modified
2026-10-21T02:58:30Z
Severity
  • 4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Emlog Blind SQL Injection via Authentication Cookie
Details

Emlog is an open source website building system. Prior to version 2.6.16, Emlog CMS Pro contains a blind SQL injection in User_Model::getUserDataByLogin(). The $account parameter is directly interpolated into SQL queries without any filtering. The vulnerability is reachable through the auth cookie validation path, where $username is extracted from the cookie and passed unfiltered into SQL — guarded only by an HMAC signature that requires AUTH_KEY to forge. This issue has been patched in version 2.6.16.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-89"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53756.json"
}
References

Affected packages

Git / github.com/emlog/emlog

Affected ranges

Type
GIT
Repo
https://github.com/emlog/emlog
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
59c3a597f206ae040d1036f2ef28b4656edc548c
Fixed
92b6eea618891b28ed0c520564dff26e170645b4
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.6.16"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "92b6eea618891b28ed0c520564dff26e170645b4"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "pro-2.6.16",
            "range":  [
                {
                    "fixed":  "59c3a597f206ae040d1036f2ef28b4656edc548c"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

5.*
5.3.1
6.*
6.0.0
6.1.0
Other
ci
pro-test-01
pro-test-02
emlog_5.*
emlog_5.1.2
emlog_5.2.0
emlog_5.2.1
emlog_5.3.0
pro-1.*
pro-1.0.0
pro-1.0.1
pro-1.0.2
pro-1.0.3
pro-1.0.4
pro-1.0.5
pro-1.0.6
pro-1.0.7
pro-1.0.8
pro-1.1.0
pro-1.1.1
pro-1.2.0
pro-1.2.1
pro-1.2.2
pro-1.3.0
pro-1.3.1
pro-1.4.0
pro-1.5.0
pro-1.5.0.new
pro-1.5.1
pro-1.6.0
pro-1.7.0
pro-1.7.1
pro-1.8.0
pro-1.9.0
pro-1.9.1
pro-1.9.2
pro-1.9.3
pro-2.*
pro-2.0.0
pro-2.0.1
pro-2.0.2
pro-2.0.3
pro-2.1.0
pro-2.1.1
pro-2.1.10
pro-2.1.11
pro-2.1.12
pro-2.1.13
pro-2.1.14
pro-2.1.15
pro-2.1.2
pro-2.1.3
pro-2.1.4
pro-2.1.5
pro-2.1.6
pro-2.1.7
pro-2.1.8
pro-2.1.9
pro-2.2.0
pro-2.2.1
pro-2.2.10
pro-2.2.11
pro-2.2.2
pro-2.2.3
pro-2.2.4
pro-2.2.5
pro-2.2.6
pro-2.2.7
pro-2.2.8
pro-2.2.9
pro-2.3.0
pro-2.3.1
pro-2.3.10
pro-2.3.11
pro-2.3.12
pro-2.3.13
pro-2.3.14
pro-2.3.15
pro-2.3.16
pro-2.3.17
pro-2.3.18
pro-2.3.2
pro-2.3.4
pro-2.3.5
pro-2.3.6
pro-2.3.7
pro-2.3.8
pro-2.3.9
pro-2.4.0
pro-2.4.1
pro-2.4.2
pro-2.4.3
pro-2.5.1
pro-2.5.10
pro-2.5.11
pro-2.5.12
pro-2.5.13
pro-2.5.14
pro-2.5.15
pro-2.5.16
pro-2.5.17
pro-2.5.18
pro-2.5.19
pro-2.5.2
pro-2.5.20
pro-2.5.21
pro-2.5.22
pro-2.5.23
pro-2.5.24
pro-2.5.25
pro-2.5.26
pro-2.5.3
pro-2.5.4
pro-2.5.5
pro-2.5.6
pro-2.5.7
pro-2.5.8
pro-2.5.9
pro-2.6.0
pro-2.6.1
pro-2.6.10
pro-2.6.11
pro-2.6.12
pro-2.6.13
pro-2.6.14
pro-2.6.15
pro-2.6.2
pro-2.6.3
pro-2.6.4
pro-2.6.5
pro-2.6.6
pro-2.6.7
pro-2.6.8
pro-2.6.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53756.json"