Dashboard / CVE-2026-76781

CVE-2026-76781

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-09-17 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: None
I: None
A: High

Description

A flaw was found in libxml2. A local user or an attacker providing a specially crafted XML catalog can trigger a NULL pointer dereference during XML catalog parsing. This occurs when a `nextCatalog` element lacks its mandatory `catalog` attribute, leading to the application crashing and causing a Denial of Service (DoS).

Weakness Classification (1)

References & Advisories (5)

https://access.redhat.com/errata/RHSA-2026:57604
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2519776
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

36 / 100
✓ No authentication
✓ Low complexity

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.16%
Raw Score 0.001570
Percentile 4.9%
Date 2026-11-02

EPSS Trend

2026-11-02
0.00157
2026-11-01
0.00157
2026-10-31
0.00157
2026-10-30
0.00167
2026-10-29
0.00167

Intelligence Sources

mitre ref →
nvd ref →

External Links