CVE-2026-33818

Enforce maximum recursion depth in encoding/asn1

State: Published
Severity: 7.5 High
Published: Aug 13, 2026
Updated: Nov 2, 2026
Reserved: Mar 23, 2026

Description

Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
encoding/asn1Go standard library	before 1.25.13Affected 1.26.0-0 to before 1.26.6Affected 1.27.0-0 to before 1.27.0-rc.3Affected

References

https://go.dev/issue/80405
https://groups.google.com/g/golang-announce/c/94pEornpRlI
https://go.dev/cl/814980
https://pkg.go.dev/vuln/GO-2026-5972

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