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CVE-2026-32777
libexpat before 2.7.5 allows an infinite loop while parsing DTD content.
Medium4.0EPSS 0.22%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
libexpat before 2.7.5 allows an infinite loop while parsing DTD content.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| mitreCNA (assigner) | 3.1 | Medium4.0 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.0.
Weakness
Affected products
- affected < 2.7.5
References (5)
- https://github.com/libexpat/libexpat/pull/1159 (opens in a new tab)
- https://github.com/libexpat/libexpat/issues/1161 (opens in a new tab)
- https://github.com/libexpat/libexpat/pull/1162 (opens in a new tab)
- https://issues.oss-fuzz.com/issues/486993411 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-32777)Record last updated .