Golang.org/x/mod Golang.org/x/mod/sumdb vulnerabilities
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Published CVEs affecting Golang.org/x/mod Golang.org/x/mod/sumdb: 1 record(s), with affected versions and fixes.
CVE-2026-56864
High · 7.5
CWE-347 Aug 13, 2026
Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb
A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious module content that cannot be detected by evaluating the transparency log. In order to determine if you have been affected: rm -r go.sum go.work.sum vendor/ && go mod tidy