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CVE-2026-76221VulnerabilityPublished Updated

snakemake · GitPython: git-config OPTION-name injection via =/#/whitespace bypasses name validator, enabling forged

Affects snakemakeSource GCVE Database

0
Authoritative record:CVE-2026-76221· High 8.7

Not known to be exploited · CVSS 8.7 High : upgrade to 9.25.1 soon.

Data as of 26 Oct 2026, 19:27 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 9.25.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Aug 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 snakemake to 9.25.1.

Affected software

ProductAffectedFixed in
Homebrewsnakemakepkg:brew/snakemakeOther threatsAffected
  • <9.25.1
Fixed in
  • 9.25.1

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

AI-suggested

A patch is available in GitPython version 9.25.1 that applies the section-name safety checks to option names, rejecting unsafe characters such as '=', '#', ';', '[', ']', and whitespace. Users should upgrade to version 9.25.1 or later to remediate this vulnerability. Until patched, avoid passing untrusted input as option names to the config writer.

Description

GitPython versions up to 3.1.57 contain a vulnerability in the config-name validator that fails to properly sanitize option names. This allows injection of arbitrary git configuration directives such as core.sshCommand or core.hooksPath by embedding special characters (=, #, whitespace) in option names. As a result, an attacker controlling the option name can cause remote code execution on the next git operation. The issue arises because the validation logic applies strict checks only to section names, not option names, allowing malicious input to be written verbatim into the config file.

References

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