CVE-2026-105111

medium

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Commons BCEL.

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

4.7

4.7 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (security@apache.org)

Timeline (UTC)

Published: 2026-10-06 20:17

Modified: 2026-10-07 13:35

NVD status: Awaiting Analysis

Last synced 3 days ago

Verified against the source API 2026-10-27 06:58 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-79

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://github.com/apache/commons-bcel/commit/fb72c225cbc6ec3d94060ed6edb269f07428d504.pat... security@apache.org
https://lists.apache.org/thread.html/co1wfk2lyrmpnfhn49o370pvfl978rw6 security@apache.org
http://www.openwall.com/lists/oss-security/2026/10/07/13 af854a3a-2127-422b-91ae-364da2661108

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗

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