BIT-golang-2026-56865

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/golang/BIT-golang-2026-56865.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-golang-2026-56865
Aliases
Published
2026-08-19T11:37:53Z
Modified
2026-08-19T12:25:40Z
Summary
Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog
Details

A malicious GOPROXY was previously capable of forging up to two sumdb tiles that allow for a requested module to bypass the GOSUMDB check and persist attacker-controlled module content to a local Go module cache. This attack allows for a malicious GOPROXY to serve malicious module content that cannot be detected by evaluating the transparency log. All tiles are now correctly verified against their parents. In order to determine if you have been affected: rm -r go.sum go.work.sum vendor/ && go mod tidy

Database specific 
{
    "cpes":  [
        "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"
    ],
    "severity":  "High"
}
References

Affected packages

Bitnami / golang

Package

Name
golang
Purl
pkg:bitnami/golang

Severity

  • 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.25.13
Introduced
1.26.0-0
Fixed
1.26.6
Introduced
1.27.0-0
Fixed
1.27.0

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/golang/BIT-golang-2026-56865.json"