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CVE-2026-78679VulnerabilityPublished Updated

legit · GitPython: TagReference.create positional reference bypasses kwargs-only --file guard, enabling arbitrary file read

Affects legitSource GCVE Database

0
Authoritative record:CVE-2026-78679· High 7.1

Not known to be exploited · CVSS 7.1 High : upgrade to 1.2.0.post0_15 soon.

Data as of 26 Oct 2026, 19:12 UTC

CVSS 4.0 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.2.0.post0_15
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 25 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 legit to 1.2.0.post0_15.

Affected software

ProductAffectedFixed in
Homebrewlegitpkg:brew/legitOther threatsAffected
  • >=0.1.0 <1.2.0.post0_15
Fixed in
  • 1.2.0.post0_15

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 1.2.0.post0_15 that properly includes positional arguments in the unsafe option checks or separates them with '--' to prevent option injection. Users should upgrade to this fixed version. No additional mitigation is required if the upgrade is applied.

Description

GitPython versions up to 1.2.0.post0_15 contain a vulnerability in the TagReference.create() method where a positional 'reference' argument can bypass the unsafe option guard for '--file'. This allows an attacker controlling the 'reference' parameter to cause an arbitrary local file read, with the file contents returned as the annotated tag message. The issue is an incomplete fix of a prior vulnerability and requires the embedding application to forward a user-controlled 'reference' value. A fix is available in version 1.2.0.post0_15.

References

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