CVE-2026-86644
lowA vulnerability was determined in star7th showdoc up to 3.9.1.
A vulnerability was determined in star7th showdoc up to 3.9.1. This vulnerability affects unknown code of the file web_src/public/editor.md/editormd.js of the component API Page Save Endpoint. Executing a manipulation can lead to cross site scripting. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 3.9.2 is able to resolve this issue. This patch is called a8ea1520850b4242f395247f72e87e597506cef0. Upgrading the affected component is recommended. The vendor confirms: "The fix [...] sets Mermaid `securityLevel` to `strict`, disables `htmlLabels`, and sanitizes rendered SVG with DOMPurify."
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://gist.github.com/saDL0w/36a72a076e9ab24408a3d27582e778b2 cna@vuldb.com
- https://github.com/star7th/showdoc/ cna@vuldb.com
- https://github.com/star7th/showdoc/commit/a8ea1520850b4242f395247f72e87e597506cef0 cna@vuldb.com
- https://github.com/star7th/showdoc/releases/tag/v3.9.2 cna@vuldb.com
- https://vuldb.com/cve/CVE-2026-86644 cna@vuldb.com
- https://vuldb.com/submit/906282 cna@vuldb.com
- https://vuldb.com/vuln/399755 cna@vuldb.com
- https://vuldb.com/vuln/399755/cti cna@vuldb.com