7.8

CVE-2026-94447: go toolchain cmd/go

CVSS: 7.8v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-94447DEBIAN-CVE-2026-94447GO-2026-6602
Published 08-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-94447 is a high (CVSS 7.8) vulnerability in go toolchain cmd/go. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.9% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.10%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 11
MGASA-2026-0497OPENSUSE-SU-2026:12093-1OPENSUSE-SU-2026:12101-1OPENSUSE-SU-2026:12112-1OPENSUSE-SU-2026:22093-1OPENSUSE-SU-2026:22095-1

Timeline

  1. 08-10-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.10%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

09-10-202622-10-2026
EPSS score
0.10%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard161 products
  • calico-apiserver-3.30All versions (No fix recorded)
  • calico-apiserver-3.31All versions (No fix recorded)
  • calico-apiserver-3.32All versions (No fix recorded)
  • calico-apiserver-fips-3.30All versions (No fix recorded)
  • calico-apiserver-fips-3.31All versions (No fix recorded)
Wolfi37 products
  • calico-apiserver-3.31All versions (No fix recorded)
  • calico-apiserver-3.32All versions (No fix recorded)
  • calico-app-policy-3.31All versions (No fix recorded)
  • calico-app-policy-3.32All versions (No fix recorded)
  • calico-cni-3.31All versions (No fix recorded)
Debian2 products
  • golang-1.19All versions (No fix recorded)
  • golang-1.24All versions (No fix recorded)

3 vendors · 200 products · Showing 200 of 222. Use Open JSON for the complete list.

References

9 links