CVE-2026-41080

Name: CVE-2026-41080
Creator: NVD / NIST
Published: 2026-04-16T17:16:54.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.9/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2026-41080 is a low-severity vulnerability rated 2.9/10 on the CVSS scale. libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

Metrics

CVSS 3.1

2.9/10

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

EPSS Probability

0.38%

29.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-331

Affected Software

Vendor	Product	Versions
Libexpat Project	Libexpat	< 2.8.0

References

https://blog.hartwork.org/posts/expat-2-8-0-released/Release Notes
https://github.com/libexpat/libexpat/issues/47Issue Tracking
https://github.com/libexpat/libexpat/pull/1183Issue Tracking, Patch
https://www.openwall.com/lists/oss-security/2026/04/26/1Mailing List
http://www.openwall.com/lists/oss-security/2026/04/26/1Mailing List

Timeline

Published: Apr 16, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-41080?

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

How severe is CVE-2026-41080?

CVE-2026-41080 has a CVSS score of 2.9/10 (LOW severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2026-41080?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-41080?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST