Servers and applications
CVE-2026-121373
HtmlSanitizer MetaRefreshAttributeSanitizer Matches Only a Narrow Subset of the Browser Refresh Grammar: Incomplete Fix for CVE-2026-48761
- Severity
- Medium 5.3
- Published
- 4 Nov 2026
- Last changed
- 4 Nov 2026
- Added to UpHeron
- 4 Nov 2026
- Fixed in
- 6.4.50, 7.4.23, 8.1.11
- Also known as
- GHSA-wm2w-4mgj-vw33
- Sources
- Project advisories (GitHub)
Affected software
| Software | Affected versions |
|---|---|
SymfonyServers and applications · github:symfony/symfony |
|
References
- CVE.org https://www.cve.org/CVERecord?id=CVE-2026-121373
- GitHub Advisory Database https://github.com/advisories/GHSA-wm2w-4mgj-vw33
- github.com https://github.com/symfony/symfony/security/advisories/GHSA-wm2w-4mgj-vw33