CVE-2026-45186
- State
- Published
- Severity
- 2.9 Low
- Published
- May 10, 2026
- Updated
- Oct 15, 2026
- Reserved
- May 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 2.9 Low | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L | mitre |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat-SADP |
Weaknesses
- CWE-407 Inefficient Algorithmic Complexity
Affected Products
| Product | Versions |
|---|---|
libexpatlibexpat project |
|
References
- https://github.com/libexpat/libexpat/pull/1216
- http://www.openwall.com/lists/oss-security/2026/05/11/16
- https://access.redhat.com/security/cve/CVE-2026-45186vdb-entry
- RHBZ#2468575issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45186.json
- https://access.redhat.com/errata/RHSA-2026:22715vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:23230vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:22721vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:29197vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:27201vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:58981vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:26319vendor-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
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