low2.9
CVE-2026-45186
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.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Libexpat Project | Libexpat | before 2.8.1 |
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/libexpat/libexpat/pull/1216
- http://www.openwall.com/lists/oss-security/2026/05/11/16
- https://access.redhat.com/errata/RHSA-2026:22715
- https://access.redhat.com/errata/RHSA-2026:22721
- https://access.redhat.com/errata/RHSA-2026:23230
- https://access.redhat.com/errata/RHSA-2026:26319
- https://access.redhat.com/errata/RHSA-2026:27201
- https://access.redhat.com/errata/RHSA-2026:29197
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/security/cve/CVE-2026-45186
- https://bugzilla.redhat.com/show_bug.cgi?id=2468575
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45186.json