CVE-2026-32777

Name: CVE-2026-32777
Creator: NVD / NIST
Published: 2026-03-16T14:19:44.78+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2026-32777 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. libexpat before 2.7.5 allows an infinite loop while parsing DTD content.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

libexpat before 2.7.5 allows an infinite loop while parsing DTD content.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.22%

12.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-835

Affected Software

Vendor	Product	Versions
Libexpat Project	Libexpat	< 2.7.5

References

https://github.com/libexpat/libexpat/issues/1161Exploit, Issue Tracking, Vendor Advisory
https://github.com/libexpat/libexpat/pull/1159Issue Tracking, Patch
https://github.com/libexpat/libexpat/pull/1162Issue Tracking, Patch
https://issues.oss-fuzz.com/issues/486993411Permissions Required

Timeline

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

Frequently Asked Questions

What is CVE-2026-32777?

libexpat before 2.7.5 allows an infinite loop while parsing DTD content.

How severe is CVE-2026-32777?

CVE-2026-32777 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2026-32777?

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-2026-32777?

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

Scan your code now

Source: NVD / NIST