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CVE-2026-120455 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L4307-L4351	[email protected]
https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.def.hpp#L5524-L5535	[email protected]
https://github.com/biojppm/rapidyaml/blob/v0.16.0/src/c4/yml/parse_engine.hpp#L249-L260	[email protected]
https://github.com/biojppm/rapidyaml/issues/680	[email protected]
https://github.com/biojppm/rapidyaml/releases/tag/v0.16.0	[email protected]
https://hackmd.io/@haindpwn/rapidyaml-parser-annotation-oob-write	[email protected]
https://www.vulncheck.com/advisories/rapidyaml-through-0.16.0-out-of-bounds-write-via-parseengine-add-annotation	[email protected]

see all 7 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-787	Out-of-bounds Write	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes