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OpenAdvisories
Medium USN-7972-1 1 CVE

opencc vulnerability

Published Jan 21, 2026 · Updated Apr 27, 2026

Ecosystem: Ubuntu

Summary

It was discovered that OpenCC incorrectly handled truncated UTF-8 input.
An attacker could possibly use this issue to cause OpenCC to crash,
resulting in a denial of service.

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 22.04 LTS 22.04:LTS opencc 1.1.3+ds1-3ubuntu3.1
Ubuntu · 24.04 LTS 24.04:LTS opencc 1.1.7+ds1-1ubuntu0.1
Ubuntu · 25.10 opencc 1.1.9+ds1-2ubuntu0.1

Vulnerabilities 1

  • Medium 5.3
    CVE-2025-15536

    BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow

    A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local …

    BYVoid OpenCC opencc opencc Debian Ubuntu Azure Linux Alpine npm

References

  • report
    https://ubuntu.com/security/CVE-2025-15536