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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
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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