Low severity2.9NVD Advisory· Published May 10, 2026· Updated Jul 24, 2026
CVE-2026-45186
CVE-2026-45186
Description
In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8(expand)+ 2 more
- (no CPE)
- cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*range: <2.8.1
- (no CPE)range: <2.8.1
- osv-coords5 versionspkg:apk/chainguard/expatpkg:apk/wolfi/expatpkg:rpm/almalinux/expatpkg:rpm/almalinux/expat-develpkg:rpm/opensuse/expat&distro=openSUSE%20Tumbleweed
< 2.8.1-r0+ 4 more
- (no CPE)range: < 2.8.1-r0
- (no CPE)range: < 2.8.1-r0
- (no CPE)range: < 2.7.3-1.el10_2.1
- (no CPE)range: < 2.7.3-1.el10_2.1
- (no CPE)range: < 2.8.1-1.1
Patches
Vulnerability mechanics
References
12- github.com/libexpat/libexpat/pull/1216nvdExploitIssue TrackingPatch
- www.openwall.com/lists/oss-security/2026/05/11/16nvdMailing ListThird Party Advisory
- access.redhat.com/errata/RHSA-2026:22715nvd
- access.redhat.com/errata/RHSA-2026:22721nvd
- access.redhat.com/errata/RHSA-2026:23230nvd
- access.redhat.com/errata/RHSA-2026:26319nvd
- access.redhat.com/errata/RHSA-2026:27201nvd
- access.redhat.com/errata/RHSA-2026:29197nvd
- access.redhat.com/security/cve/CVE-2026-45186nvd
- bugzilla.redhat.com/show_bug.cginvd
- cert-portal.siemens.com/productcert/html/ssa-082556.htmlnvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45186.jsonnvd
News mentions
1- Patch Tuesday - May 2026Rapid7 Blog · May 13, 2026