CVE-2026-94447
Checksum database bypass for golang.org/toolchain in cmd/go
No known exploitation. EPSS puts it in the 2nd percentile. Fixed versions are out.
What to do
Find your product and version, then upgrade to the build on the right.
- Go toolchain cmd/goAffected: < 1.26.9Upgrade to: 1.26.9Affected: ≥ 1.27.0-0, < 1.27.2Upgrade to: 1.27.2Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/toolchain go.sum entry and operates a malicious GOMODPROXY the user chooses to use can bypass the intended checksum. We now ensure that golang.org/toolchain always goes to the network for the canonical checksum.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.1% chance of exploitation activity in the next 30 days, which ranks it in the 2nd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
3 events over 1 day, from the signal feeds we watch.
- Record updated
- Publishedrecord updated
Affected products
Sources
References in the record
And 1 more reference. See all after sign-in
In the news
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