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.
Advisories

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Fixes

Solution

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Workaround

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History

Mon, 02 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
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.
Title rapidyaml through 0.16.0 Out-of-Bounds Write via ParseEngine::_add_annotation()
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 6.9, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-02T14:29:12.335Z

Reserved: 2026-11-02T12:42:21.842Z

Link: CVE-2026-120455

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-02T15:17:29.117

Modified: 2026-11-02T15:17:29.117

Link: CVE-2026-120455

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-02T15:45:17Z

Weaknesses