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1 vulnerability found for rapidyaml by biojppm
CVE-2026-120455 (GCVE-0-2026-120455)
Vulnerability from cvelistv5 – Published: 2026-11-02 14:29 – Updated: 2026-11-09 14:00
VLAI
EPSS
VEX
Title
rapidyaml through 0.16.0 Out-of-Bounds Write via ParseEngine::_add_annotation()
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 13:59 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
VulnCheck
CNA
References
8 references
| URL | Tags |
|---|---|
| https://github.com/biojppm/rapidyaml/issues/680 | issue-tracking |
| https://github.com/biojppm/rapidyaml/blob/v0.16.0… | technical-description |
| https://github.com/biojppm/rapidyaml/blob/v0.16.0… | technical-description |
| https://github.com/biojppm/rapidyaml/blob/v0.16.0… | technical-description |
| https://github.com/biojppm/rapidyaml/releases/tag… | release-notes |
| https://hackmd.io/@haindpwn/rapidyaml-parser-anno… | technical-description |
| https://www.vulncheck.com/advisories/rapidyaml-th… | third-party-advisory |
| https://hackmd.io/@haindpwn/cve-2026-120455-rapid… | exploit |
Impacted products
Date Public
2026-11-01 00:00
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