Skip to content

CVE-2026-56131

Use After Free: is CVE-2026-56131real, exploitable, or a false positive? Here's the community verdict.

signals

public sources

Exploited in wild
Not listed
CISA KEV
Base severity
4.9 Medium
CVSS
Exploitation prob.
0.1%
FIRST EPSS
Weakness
CWE-416 · Use After Free
CWE

Moderate signals. Triage by your actual exposure and reachability.

baseline read

auto · not a community verdict

Low signal — verdict needed

Few public signals point to active risk. Whether a scanner hit here is a true or false positive depends on your version and config — community verdicts decide.

Based on CVSS · FIRST EPSS

Confirm or dispute →

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

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).

Published

Embed this verdict
TruePositive verdict for CVE-2026-56131
Markdown
[![TruePositive verdict](https://www.truepositive.app/cve/CVE-2026-56131/badge.svg)](https://www.truepositive.app/cve/CVE-2026-56131)
HTML
<a href="https://www.truepositive.app/cve/CVE-2026-56131"><img src="https://www.truepositive.app/cve/CVE-2026-56131/badge.svg" alt="TruePositive verdict for CVE-2026-56131"></a>

Live badge that updates automatically as the community verdict changes.

Community ground truth

Be the first practitioner to weigh in

So far this is only TruePositive's editorial baseline from public sources. Add your real-world verdict below — it becomes the signal the next person triaging this relies on.

🥇 The first 50 practitioners to contribute earn a Founding Contributor badge.

In your experience, is this finding real and exploitable?

0 verdicts
Not a real issue

No account needed. Anonymous verdicts post as an unverified signal. Log in to make yours verified and earn reputation.

Field notes & remediation

Verdicts are the quick signal. Notes are the evidence and fixes behind them.

No notes yet. Be the first to share what you saw, or a fix that worked.

    Add a field note or remediationoptional
    Note type

    What are you adding?

    Markdown supported · minimum 20 characters.

    Same weakness: CWE-416 · Use After Free.