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Vulnerability record · CVE-2024-28757 · published 10 March 2024

CVE-2024-28757: Libexpat project libexpat vulnerability

LLibexpat Project · Libexpat

libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).

7.5 CVSS 3.1 High EPSS 2.0% · top 20.0% CWE-776 · CWE-776
7.5CVSS 3.1 base score
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
17References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).

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

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2024/03/15/1 Mailing ListPatchRelease Notes
https://github.com/libexpat/libexpat/issues/839 ExploitIssue TrackingPatch
https://github.com/libexpat/libexpat/pull/842 Issue TrackingPatch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPLC6WDSRDUYS7F7JWAOVOH Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKJ7V5F6LJCEQJXDBWGT27J Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VK2O34GH43NTHBZBN7G5Y6Y Mailing List
https://security.netapp.com/advisory/ntap-20240322-0001/ Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/03/15/1 Mailing ListPatchRelease Notes
https://github.com/libexpat/libexpat/issues/839 ExploitIssue TrackingPatch
https://github.com/libexpat/libexpat/pull/842 Issue TrackingPatch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPLC6WDSRDUYS7F7JWAOVOH Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKJ7V5F6LJCEQJXDBWGT27J Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VK2O34GH43NTHBZBN7G5Y6Y Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/FPLC6WDSRDUYS7F7JWAOVOHFN
https://lists.fedoraproject.org/archives/list/[email protected]/message/LKJ7V5F6LJCEQJXDBWGT27J7N
https://lists.fedoraproject.org/archives/list/[email protected]/message/VK2O34GH43NTHBZBN7G5Y6YKJ
https://security.netapp.com/advisory/ntap-20240322-0001/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2024-28757), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.