Debian/expat: high 7.8
libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.
Action: Upgrade expat to 2.8.4-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2.8.4-1 | - |
Fixed versions
| 2.8.4-1 |
Sources
- osv: DEBIAN-CVE-2026-76957#Debian:14/expat
- https://security-tracker.debian.org/tracker/CVE-2026-76957
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