Medium severity6.9NVD Advisory· Published Jun 21, 2026· Updated Jun 23, 2026
CVE-2026-56407
CVE-2026-56407
Description
libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*range: <2.8.2
- (no CPE)range: <2.8.2
- (no CPE)range: <2.8.2
- osv-coords3 versionspkg:apk/chainguard/expat-devpkg:rpm/opensuse/expat&distro=openSUSE%20Tumbleweedpkg:apk/wolfi/expat-dev
< 2.8.2-r0+ 2 more
- (no CPE)range: < 2.8.2-r0
- (no CPE)range: < 2.8.2-1.1
- (no CPE)range: < 2.8.2-r0
Patches
Vulnerability mechanics
References
1- github.com/libexpat/libexpat/pull/1262nvdPatchIssue Tracking
News mentions
1- Libexpat: Ten Integer Overflow and Use-After-Free Vulnerabilities Disclosed TogetherVypr Intelligence · Jun 21, 2026