CVE-2026-56859

Add recursion depth guard during decode in encoding/xml

State: Published
Severity: 7.5 High
Published: Aug 13, 2026
Updated: Aug 14, 2026
Reserved: Jun 23, 2026

Description

Previously, DecodeElement would reset the depth counter causing it to never fire; this could lead to stack exhaustion.

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-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
encoding/xmlGo 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/80481
https://go.dev/cl/803320
https://groups.google.com/g/golang-announce/c/94pEornpRlI
https://pkg.go.dev/vuln/GO-2026-6088

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