CVE-2024-8176

Libexpat: expat: improper restriction of xml entity expansion depth in libexpat

A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the environment and library usage.

Affected

Red Hat · libexpat · Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 8 · Red Hat Enterprise Linux 8.2 Advanced Update Support · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

CVSS v3.1 REDHAT

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

EPSS

1.35% chance of exploitation in the next 30 days, 71st percentile

Published

2025-03-14

Updated

2026-10-15

Proof-of-concept exploits (1)

• uthrasri/Expat_2.6.2_CVE-2024-81760★ · 2025-04-10

Security advisories

• https://www.kb.cert.org/vuls/id/760160

References

• CVE Record
• NVD entry

Related

• CVE-2014-3566
• CVE-2014-3570
• CVE-2014-5139
• CVE-2014-8275
• CVE-2019-16746
• CVE-2019-17666