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VulnerabilityPublished Updated

CVE-2026-76217: GitPython · Arbitrary file read via --pathspec-from-file in IndexFile.remove() and Head.checkout()

Affects nbdimeSource GCVE Database

0
Authoritative record:CVE-2026-76217· High 7.1

Not known to be exploited · CVSS 7.1 High : upgrade to 4.0.4_7 soon.

Data as of 26 Oct 2026, 17:27 UTC

CVSS 4.0 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0.4_7
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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 nbdime to 4.0.4_7.

Affected software

ProductAffectedFixed in
Homebrewnbdimepkg:brew/nbdimeOther threatsAffected
  • >=1.1.0 <4.0.4_7
Fixed in
  • 4.0.4_7

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

AI-suggested

A fix is available in GitPython version 4.0.4_7. Users should upgrade to this version or later to remediate the vulnerability. Until upgrading, avoid passing untrusted input to the IndexFile.remove() and Head.checkout() methods, especially the --pathspec-from-file and --pathspec-file-nul options. No other mitigations are documented or required.

Description

GitPython versions from 1.1.0 up to but not including 4.0.4_7 contain a vulnerability in the IndexFile.remove() and Head.checkout() methods. These methods forward arbitrary keyword arguments into underlying git commands without proper validation, allowing an attacker to use the combination of --pathspec-from-file and --pathspec-file-nul flags to cause Git to treat the entire contents of a specified file as a pathspec. When the pathspec does not match any files, Git outputs the entire file content verbatim in the error message, which GitPython surfaces in the GitCommandError.stderr. This results in an arbitrary file read disclosure to the caller. The vulnerability has a CVSS 3.1 score of 6.5 (medium severity) and is fixed in version 4.0.4_7.

References

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