Vulnerability Details CVE-2026-76957
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.3%
CVSS Severity
CVSS v3 Score 4.9
References
Products affected by CVE-2026-76957
-
cpe:2.3:a:libexpat_project:libexpat:-
-
cpe:2.3:a:libexpat_project:libexpat:1.95.0
-
cpe:2.3:a:libexpat_project:libexpat:1.95.1
-
cpe:2.3:a:libexpat_project:libexpat:1.95.2
-
cpe:2.3:a:libexpat_project:libexpat:1.95.3
-
cpe:2.3:a:libexpat_project:libexpat:1.95.4
-
cpe:2.3:a:libexpat_project:libexpat:1.95.5
-
cpe:2.3:a:libexpat_project:libexpat:1.95.6
-
cpe:2.3:a:libexpat_project:libexpat:1.95.7
-
cpe:2.3:a:libexpat_project:libexpat:1.95.8
-
cpe:2.3:a:libexpat_project:libexpat:2.0.0
-
cpe:2.3:a:libexpat_project:libexpat:2.0.1
-
cpe:2.3:a:libexpat_project:libexpat:2.1.0
-
cpe:2.3:a:libexpat_project:libexpat:2.1.1
-
cpe:2.3:a:libexpat_project:libexpat:2.2.0
-
cpe:2.3:a:libexpat_project:libexpat:2.2.1
-
cpe:2.3:a:libexpat_project:libexpat:2.2.10
-
cpe:2.3:a:libexpat_project:libexpat:2.2.2
-
cpe:2.3:a:libexpat_project:libexpat:2.2.3
-
cpe:2.3:a:libexpat_project:libexpat:2.2.4
-
cpe:2.3:a:libexpat_project:libexpat:2.2.5
-
cpe:2.3:a:libexpat_project:libexpat:2.2.6
-
cpe:2.3:a:libexpat_project:libexpat:2.2.7
-
cpe:2.3:a:libexpat_project:libexpat:2.2.8
-
cpe:2.3:a:libexpat_project:libexpat:2.2.9
-
cpe:2.3:a:libexpat_project:libexpat:2.3.0
-
cpe:2.3:a:libexpat_project:libexpat:2.4.0
-
cpe:2.3:a:libexpat_project:libexpat:2.4.1
-
cpe:2.3:a:libexpat_project:libexpat:2.4.3
-
cpe:2.3:a:libexpat_project:libexpat:2.4.4
-
cpe:2.3:a:libexpat_project:libexpat:2.4.5
-
cpe:2.3:a:libexpat_project:libexpat:2.4.6
-
cpe:2.3:a:libexpat_project:libexpat:2.4.7
-
cpe:2.3:a:libexpat_project:libexpat:2.4.8
-
cpe:2.3:a:libexpat_project:libexpat:2.4.9
-
cpe:2.3:a:libexpat_project:libexpat:2.5.0
-
cpe:2.3:a:libexpat_project:libexpat:2.6.0
-
cpe:2.3:a:libexpat_project:libexpat:2.6.1
-
cpe:2.3:a:libexpat_project:libexpat:2.6.2
-
cpe:2.3:a:libexpat_project:libexpat:2.6.3
-
cpe:2.3:a:libexpat_project:libexpat:2.6.4
-
cpe:2.3:a:libexpat_project:libexpat:2.7.0
-
cpe:2.3:a:libexpat_project:libexpat:2.7.1
-
cpe:2.3:a:libexpat_project:libexpat:2.7.2
-
cpe:2.3:a:libexpat_project:libexpat:2.7.3
-
cpe:2.3:a:libexpat_project:libexpat:2.7.4
-
cpe:2.3:a:libexpat_project:libexpat:2.7.5
-
cpe:2.3:a:libexpat_project:libexpat:2.8.0
-
cpe:2.3:a:libexpat_project:libexpat:2.8.1