OSV-2020-1611

Heap-buffer-overflow in yaml_emitter_emit_flow_mapping_key

No score

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24869

Crash type: Heap-buffer-overflow READ 4
Crash state:
yaml_emitter_emit_flow_mapping_key
yaml_emitter_state_machine
yaml_emitter_emit

What each source reports

OSV No score

Heap-buffer-overflow in yaml_emitter_emit_flow_mapping_key

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24869

Crash type: Heap-buffer-overflow READ 4
Crash state:
yaml_emitter_emit_flow_mapping_key
yaml_emitter_state_machine
yaml_emitter_emit

Record: OSV-2020-1611
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`libyaml` OSS-Fuzz	Listed versions, plus commit ranges 0.2.6-rc.1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

OSV-2020-1611 is a vulnerability with no CVSS score yet in libyaml, published August 14, 2020. No source lists public exploit code. No source names a fixed version.

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=24869