CVE-2026-105111

MEDIUMCVSS 4.7

Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Commons BCEL. This only happens when you're using Class2HTML to generate webpages for possibly-attacker-controlled class files, where Class2HTML emitters write attacker class-file strings into HTML unescaped (stored XSS in reports). This issue affects Apache Commons BCEL: before 6.13.0. Users are recommended to upgrade to version 6.13.0, which fixes the issue.

Timeline

Published:October 6th, 2026 8:17 PM

Last modified:October 7th, 2026 1:35 PM

CVSS Scoring

CVSS v3: 4.7 (MEDIUM)

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

Weaknesses (CWE)

CWE-79

References & Reports

Advisories, patches, and third-party reports

https://github.com/apache/commons-bcel/commit/fb72c225cbc6ec3d94060ed6edb269f07428d504.patch
https://lists.apache.org/thread.html/co1wfk2lyrmpnfhn49o370pvfl978rw6
http://www.openwall.com/lists/oss-security/2026/10/07/13

Source: NIST NVD · Data may lag official sources by up to one minute