{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-120455","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-02T12:42:21.842Z","datePublished":"2026-11-02T14:29:12.335Z","dateUpdated":"2026-11-02T14:29:12.335Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-02T14:29:12.335Z"},"datePublic":"2026-11-01T00:00:00.000Z","title":"rapidyaml through 0.16.0 Out-of-Bounds Write via ParseEngine::_add_annotation()","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Out-of-bounds Write","cweId":"CWE-787","type":"CWE"}]}],"affected":[{"vendor":"biojppm","product":"rapidyaml","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"0.16.0","status":"affected","versionType":"semver"}],"repo":"https://github.com/biojppm/rapidyaml"}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"HIGH","baseScore":6.1,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/biojppm/rapidyaml/issues/680","tags":["issue-tracking"]},{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L4307-L4351","tags":["technical-description"]},{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L5524-L5535","tags":["technical-description"]},{"url":"https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.hpp#L249-L260","tags":["technical-description"]},{"url":"https://github.com/biojppm/rapidyaml/releases/tag/v0.16.0","tags":["release-notes"],"name":"rapidyaml v0.16.0 Release Notes"},{"url":"https://hackmd.io/@haindpwn/rapidyaml-parser-annotation-oob-write","tags":["technical-description"]},{"name":"VulnCheck Advisory: rapidyaml through 0.16.0 Out-of-Bounds Write via ParseEngine::_add_annotation()","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/rapidyaml-through-0.16.0-out-of-bounds-write-via-parseengine-add-annotation"}],"credits":[{"lang":"en","value":"HaiND from the Post and Telecommunication Institute of Technology","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}