CVE-2026-126498

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-126498
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126498.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-126498
Aliases
  • GHSA-cwxm-8ch5-j2vh
Published
2026-11-11T00:58:50Z
Modified
2026-11-11T10:47:27Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
WriteFreely before 0.17.3 Stored XSS via Unsanitized Post Slug
Details

WriteFreely before 0.17.3 contains a stored cross-site scripting vulnerability that allows authenticated authors to inject HTML by supplying a malicious post slug via the CreatePost API. The raw slug is concatenated into an anchor by augmentReadingDestination() for paid-shortcode posts, executing script for RSS/Atom feed readers, newsletter recipients and ActivityPub viewers.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126498.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "fixed": "0.17.3"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        },
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "fixed": "0.17.3"
                        }
                    ],
                    "source": "DESCRIPTION"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/writefreely/writefreely

Affected ranges

Type
GIT
Repo
https://github.com/writefreely/writefreely
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d7231d81a914f1314a218d5e8fde6e0341391ccd
Fixed
d2485910010b1671a6e4341ab36cd199b7868e8d
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "fixed": "d7231d81a914f1314a218d5e8fde6e0341391ccd"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v0.17.3",
            "range": [
                {
                    "fixed": "d2485910010b1671a6e4341ab36cd199b7868e8d"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.10.0
v0.11.0
v0.11.1
v0.11.2
v0.12.0
v0.12.0rc1
v0.13.0
v0.13.0rc1
v0.13.1
v0.13.2
v0.14.0
v0.15.0
v0.16.0
v0.17.0
v0.17.1
v0.17.2
v0.2.0
v0.2.1
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.7.0
v0.7.1
v0.9.0
v0.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126498.json"