CVE-2023-52425

libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are required in the case of a large token for which multiple buffer fills are needed.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-25)

CWE

CWE-400

Published

2024-02-04

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• libexpat_project:libexpat

References

• http://www.openwall.com/lists/oss-security/2024/03/20/5
• https://github.com/libexpat/libexpat/pull/789
• https://lists.debian.org/debian-lts-announce/2024/04/msg00006.html
• 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/

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