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 execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.

Affected: npm: opencc

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 execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.

Affected: openEuler:24.03-LTS-SP2: opencc

Opencc is for between Traditional Chinese and Simplified Chinese characters and phrases conversion library. Security Fix(es):

A vulnerability was found in BYVoid OpenCC up to 1.1.9 and classified as critical. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The exploit is available at github.com. It is declared as proof-of-concept. Applying the patch 345c9a50ab07018f1b4439776bad78a0d40778ec is able to eliminate this problem. The bugfix is ready for download at github.com.(CVE-2025-15536)

libopencc1_2-1.2.0-1.1 on GA media

Security update for opencc

Affected: Ubuntu:16.04:LTS: opencc, Ubuntu:Pro:18.04:LTS: opencc, Ubuntu:Pro:20.04:LTS: opencc, Ubuntu:22.04:LTS: opencc, Ubuntu:24.04:LTS: opencc, Ubuntu:25.10: opencc

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 execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.