8.4Hoch

CVE-2026-56865Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog

Go toolchain cmd/go; golang.org/x/mod golang.org/x/mod/sumdb/tlog Veröffentlicht: (vor 2 Monaten)

Beschreibung

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

Schwachstellentyp (CWE): CWE-347

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
Go toolchain cmd/go < 1.25.13, 1.26.0-0 – < 1.26.6, 1.27.0-0 – < 1.27.0-rc.3
golang.org/x/mod golang.org/x/mod/sumdb/tlog < 0.40.0

Referenzen und Patches