{"id":"CVE-2026-120455","published":"2026-11-02T15:17:29.117","lastModified":"2026-11-02T19:14:53.030","description":"rapidyaml through 0.16.0 contains an out-of-bounds write vulnerability in ParseEngine::_add_annotation() that allows attackers to corrupt memory by supplying YAML with excess anchors or tags. Attackers can submit YAML with consecutive anchors or tags to overflow the fixed two-element annotation array in release builds, corrupting stack memory and crashing the process.","cvssScore":6.1,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","cwes":["CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L4307-L4351","tags":[]},{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L5524-L5535","tags":[]},{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.hpp#L249-L260","tags":[]},{"url":"https://github.com/biojppm/rapidyaml/issues/680","tags":[]},{"url":"https://github.com/biojppm/rapidyaml/releases/tag/v0.16.0","tags":[]},{"url":"https://hackmd.io/@haindpwn/rapidyaml-parser-annotation-oob-write","tags":[]},{"url":"https://www.vulncheck.com/advisories/rapidyaml-through-0.16.0-out-of-bounds-write-via-parseengine-add-annotation","tags":[]}],"exploitRefs":[{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L4307-L4351","tags":[]},{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L5524-L5535","tags":[]},{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.hpp#L249-L260","tags":[]},{"url":"https://github.com/biojppm/rapidyaml/issues/680","tags":[]},{"url":"https://github.com/biojppm/rapidyaml/releases/tag/v0.16.0","tags":[]}],"hasPoc":true,"ai":null}