CVE-2026-28737
Stored XSS in Gitea <1.26.0 via glTF extensionsRequired in 3D viewer.
Is CVE-2026-28737 being exploited?
Not confirmed. CVE-2026-28737 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-28737?
CVE-2026-28737 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-28737?
Yes. A fix has been recorded for CVE-2026-28737. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-28737 affect?
CVE-2026-28737 affects Gitea 1.25.x before 1.26.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-28737?
Upgrade to 1.26.0+; apply patch; review glTF handling.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Stored XSS lets attackers run scripts in victims' browsers via glTF assets; may steal cookies or take actions as the logged-in user.
Patch when possible
- affected>= 1.25.0 and < 1.26.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.