Integer Overflow or Wraparound Affecting libxml2-2.9.1 package, versions <2.9.1+e1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.17% (6th percentile)

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  • Snyk IDSNYK-ECHOLATEST-LIBXML2291-21429866
  • published22 Oct 2026
  • disclosed5 Sept 2026

Introduced: 5 Sep 2026

CVE-2026-86139  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Echo:latest libxml2-2.9.1 to version 2.9.1+e1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2-2.9.1 package and not the libxml2-2.9.1 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

In libxml2 before 2.15.4, xmlURIEscapeStr in uri.c has an integer overflow.

CVSS Base Scores

version 3.1