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bcel vulnerabilities

Vulnerabilities published for bcel in the last 30 days: 2. Listed in the KEV catalogue: 0.

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Vulnerabilities: 3

  1. CVE-2026-105111

    Low · CVSS 2.3EPSS 0.25%No fix published

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

    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.

    Published Updated
  2. CVE-2026-94114

    High · CVSS 8.2EPSS 0.28%No fix published

    Apache Commons BCEL: Class repositories cache class files under their self-declared names, enabling cache poisoning

    Symbolic name not mapping to correct class. BCEL caches attacker-controlled classes under their self-declared names without validating the requested name, allowing subsequent lookups and name-keyed verification results to refer to a different class. This issue affects Apache Commons BCEL: before 6.13.0. Users are recommended to upgrade to version 6.13.0, which fixes the issue.

    Published Updated
  3. CVE-2022-42920

    Critical · CVSS 9.8EPSS 2.81%Fix available

    Apache Commons BCEL prior to 6.6.0 allows producing arbitrary bytecode via out-of-bounds writing

    Apache Commons BCEL has a number of APIs that would normally only allow changing specific class characteristics. However, due to an out-of-bounds writing issue, these APIs can be used to produce arbitrary bytecode. This could be abused in applications that pass attacker-controllable data to those APIs, giving the attacker more control over the resulting bytecode than otherwise expected. Update to Apache Commons BCEL 6.6.0.

    • Update to 6.5.0-1ubuntu0.1
    Published Updated

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