CVE-2026-56131
Expat XML_ResumeParser Use-After-Free Vulnerability
Description
libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).
INFO
Published Date :
June 19, 2026, 2:56 a.m.
Last Modified :
June 19, 2026, 2:56 a.m.
Remotely Exploit :
No
Source :
mitre
Affected Products
The following products are affected by CVE-2026-56131
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 8254265b-2729-46b6-b9e3-3dfca2d5bfca |
Solution
- Update libexpat to version 2.8.2 or later.
- Apply vendor patches for libexpat immediately.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-56131 vulnerability anywhere in the article.