01 Record

CVE-2026-56865

Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog

HighPUBLISHEDCNA: Go

Base score8.4 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

02 Description

Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog

Published: 2026-08-13 21:58Z20 HR AGO
Last updated: 2026-08-14 15:34Z3 HR AGO
Reserved: 2026-06-23
Assigning CNA: Go
Record state: PUBLISHED
Severity: High (CVSS 8.4)
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses: CWE-347
SSVC decision: ExploitationnoneAutomatablenoTechnical Impacttotal
Data version: 5.2
Document digest: 8fe9366036f26ae5a45e308ad6777488b2e3d5f2cd8ae9366be527c697e5b82b

VendorProductVersionsPlatforms

Go toolchaincmd/go0 to < 1.25.13, 1.26.0-0 to < 1.26.6, 1.27.0-0 to < 1.27.0-rc.3—

golang.org/x/modgolang.org/x/mod/sumdb/tlog0 to < 0.40.0—