{"id":"CVE-2026-126498","published":"2026-11-11T01:17:14.790","lastModified":"2026-11-11T01:17:14.790","description":"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.","cvssScore":5.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/writefreely/writefreely/blob/v0.17.2/database.go#L702-L705","tags":[]},{"url":"https://github.com/writefreely/writefreely/blob/v0.17.2/postrender.go#L117-L121","tags":[]},{"url":"https://github.com/writefreely/writefreely/commit/d7231d81a914f1314a218d5e8fde6e0341391ccd","tags":[]},{"url":"https://github.com/writefreely/writefreely/releases/tag/v0.17.3","tags":[]},{"url":"https://github.com/writefreely/writefreely/security/advisories/GHSA-cwxm-8ch5-j2vh","tags":[]},{"url":"https://www.vulncheck.com/advisories/writefreely-before-0.17.3-stored-xss-via-unsanitized-post-slug","tags":[]}],"exploitRefs":[{"url":"https://github.com/writefreely/writefreely/blob/v0.17.2/database.go#L702-L705","tags":[]},{"url":"https://github.com/writefreely/writefreely/blob/v0.17.2/postrender.go#L117-L121","tags":[]},{"url":"https://github.com/writefreely/writefreely/commit/d7231d81a914f1314a218d5e8fde6e0341391ccd","tags":[]},{"url":"https://github.com/writefreely/writefreely/releases/tag/v0.17.3","tags":[]},{"url":"https://github.com/writefreely/writefreely/security/advisories/GHSA-cwxm-8ch5-j2vh","tags":[]}],"hasPoc":true,"ai":null}