UBUNTU-CVE-2026-120455
Dashboard / Vulnerabilities / UBUNTU-CVE-2026-120455
Summary:
Details: 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.
References: https://ubuntu.com/security/CVE-2026-120455, https://www.cve.org/CVERecord?id=CVE-2026-120455, https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L4307-L4351, https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L5524-L5535, https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.hpp#L249-L260, https://github.com/biojppm/rapidyaml/issues/680, https://github.com/biojppm/rapidyaml/releases/tag/v0.16.0, https://hackmd.io/@haindpwn/rapidyaml-parser-annotation-oob-write, https://www.vulncheck.com/advisories/rapidyaml-through-0.16.0-out-of-bounds-write-via-parseengine-add-annotation
Affected packages
Package
Name: rapidyaml
Purl: pkg:deb/ubuntu/rapidyaml?arch=source&distro=stonking
Affected ranges
Type: ECOSYSTEM
Events:
