{"id":"GHSA-5pr6-crvp-2j9f","summary":"Open Chinese Convert has Out-of-bounds Write","details":"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.","aliases":["CVE-2025-15536"],"modified":"2026-02-22T23:26:19.355843Z","published":"2026-01-18T09:30:27Z","database_specific":{"github_reviewed_at":"2026-02-06T22:32:12Z","nvd_published_at":"2026-01-18T09:15:46Z","cwe_ids":["CWE-119","CWE-787"],"severity":"LOW","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-15536"},{"type":"WEB","url":"https://github.com/BYVoid/OpenCC/issues/997"},{"type":"WEB","url":"https://github.com/BYVoid/OpenCC/pull/1005"},{"type":"WEB","url":"https://github.com/BYVoid/OpenCC/commit/345c9a50ab07018f1b4439776bad78a0d40778ec"},{"type":"PACKAGE","url":"https://github.com/BYVoid/OpenCC"},{"type":"WEB","url":"https://github.com/oneafter/1222/blob/main/repro"},{"type":"WEB","url":"https://vuldb.com/?ctiid.341708"},{"type":"WEB","url":"https://vuldb.com/?id.341708"},{"type":"WEB","url":"https://vuldb.com/?submit.733347"}],"affected":[{"package":{"name":"opencc","ecosystem":"npm","purl":"pkg:npm/opencc"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.2.0"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 1.1.9","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-5pr6-crvp-2j9f/GHSA-5pr6-crvp-2j9f.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"}]}