Vulnerability · Published Aug 29, 2026 · Assigned by VulnCheck
CVE-2026-82451Formwork < 2.3.11 Stored XSS via Referer Header
Medium 6.1
In plain English
A medium-severity cross-site scripting in Formwork from getformwork. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.4%top 70.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Formwork before 2.3.11 contains a stored cross-site scripting vulnerability in visit tracking that records the Referer header host unescaped. Unauthenticated attackers can craft malicious Referer headers to inject markup that executes in administrator browsers when viewing the Statistics panel.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| getformwork | Formwork | 2.0.0 – through 2.3.10 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-hpgc-57cm-66pc) vendor-advisory
- Release Notes release-notes
- VulnCheck Advisory: Formwork through 2.3.14 Stored XSS via Referer Header third-party-advisory