libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404 Patch, Vendor Advisory
- https://github.com/libexpat/libexpat/pull/777 Vendor Advisory
- https://github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404 Patch, Vendor Advisory
- https://github.com/libexpat/libexpat/pull/777 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.5 · libexpat_projectNVD modified 2026-10-15 01:17
Affected (CPE criteria) 1
cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
References 15
- https://cwe.mitre.org/data/definitions/776.html Technical Description
- https://github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404 Patch, Vendor Advisory
- https://github.com/libexpat/libexpat/pull/777 Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNUBSGZFEZOBHJFTAD42SAN4ATW2VEMV/
- https://security.netapp.com/advisory/ntap-20240307-0005/
- https://cwe.mitre.org/data/definitions/776.html Technical Description
- https://github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404 Patch, Vendor Advisory
- https://github.com/libexpat/libexpat/pull/777 Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNUBSGZFEZOBHJFTAD42SAN4ATW2VEMV/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/
- https://security.netapp.com/advisory/ntap-20240307-0005/
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-784301.html