CVE-2026-105111lowCWE-79

CVE-2026-105111: low-severity vulnerability in Apache Commons BCEL

Apache Commons BCEL: Class2HTML emits unescaped class strings, enabling stored XSS

Published · Updated

8Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 2.3epss 0.3%
exploitation probability
0.3%top 85% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Affected products
Apache Software Foundation · Apache Commons BCEL
Related CVEs — Apache Commons BCEL

In the same product, most dangerous first.

CVE-2022-42920—Apache Commons BCEL prior to 6.6.0 allows producing arbitrary bytecode via out-of-bounds writingEPSS 3.0%CVE-2026-94114HIGHApache Commons BCEL: Class repositories cache class files under their self-declared names, enabling cache poisoningEPSS 0.3%
References
https://github.com/apache/commons-bcel/commit/fb72c225cbc6ec3d94060ed6edb269f07428d504.patchhttps://lists.apache.org/thread.html/co1wfk2lyrmpnfhn49o370pvfl978rw6http://www.openwall.com/lists/oss-security/2026/10/07/13