Integer Overflow or Wraparound Affecting firefox package, versions <0:140.11.0-1.el8_10


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.61% (45th percentile)

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  • Snyk IDSNYK-CENTOS8-FIREFOX-16798902
  • published22 May 2026
  • disclosed19 May 2026

Introduced: 19 May 2026

CVE-2026-8956  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Centos:8 firefox to version 0:140.11.0-1.el8_10 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS Base Scores

version 3.1