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CVE-2025-68119VulnerabilityPublished Updated

CVE-2025-68119: Go toolchain cmd/go · OS Command Injection

Affects Go toolchain cmd/goSource CVE Database V5

0

Not known to be exploited · CVSS 7.0 High : upgrade to 1.25.6 soon.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
7.0High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.25.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Go toolchain cmd/go to 1.25.6.

Affected software

ProductAffectedFixed in
Go toolchaincmd/goAffected
  • >=1.25.0 <1.25.6
Fixed in
  • 1.25.6
Gocmd/gopkg:golang/cmd/goOther threatsAffected
  • >=1.25.0 <1.25.6
Fixed in
  • 1.25.6

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

1. Avoid using non-standard or custom module sources unless absolutely necessary and ensure they are from trusted origins. 2. Do not explicitly specify version strings in module downloads unless verified and sanitized. 3. 4. Implement strict input validation and sanitization for version strings in internal tooling or scripts that invoke cmd/go. 5. Restrict or remove Mercurial and Git from build environments where not required to reduce attack surface. 6. Use containerized or isolated build environments to limit the impact of potential local code execution. 7. Monitor build logs and filesystem changes for unexpected behavior during module downloads. 8. Educate developers about the risks of using untrusted module versions and enforce policies for module provenance verification. 9. Employ runtime security tools to detect anomalous command executions or file writes during builds. 10. Consider using reproducible builds and cryptographic verification of module sources to prevent tampering.

Description

Downloading and building modules with malicious version strings can cause local code execution. On systems with Mercurial (hg) installed, downloading modules from non-standard sources (e.g., custom domains) can cause unexpected code execution due to how external VCS commands are constructed. This issue can also be triggered by providing a malicious version string to the toolchain. On systems with Git installed, downloading and building modules with malicious version strings can allow an attacker to write to arbitrary files on the filesystem. This can only be triggered by explicitly providing the malicious version strings to the toolchain and does not affect usage of @latest or bare module paths.

References

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