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VulnerabilityPublished

CVE-2026-110857: Legit · GitPython command wrappers omit unsafe protocol and option checks

Affects legitSource GCVE Database

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Authoritative record:CVE-2026-110857· High 7.7

Not known to be exploited · CVSS 7.7 High : upgrade to 1.2.0.post0_16 soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score
7.7High
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 1.2.0.post0_16
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 29 Oct 2026.

What to do

Upgrade legit to 1.2.0.post0_16.

Affected software

ProductAffectedFixed in
Homebrewlegitpkg:brew/legitOther threatsAffected
  • >=0.1.0 <1.2.0.post0_16
Fixed in
  • 1.2.0.post0_16

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 1.2.0.post0_16 that adds the missing unsafe protocol and option checks to the affected methods. Users should upgrade to this version or later to remediate these vulnerabilities. The recommended fix involves adding protocol checks to Git.ls_remote, unsafe option checks to Repo.merge_base, and similar checks to IndexFile.move as per existing guard patterns. No additional mitigation is required beyond applying the official fix.

Description

GitPython versions from 0.1.0 up to but not including 1.2.0.post0_16 have three methods that omit critical safety checks for unsafe protocols and options. The ls_remote method does not check URLs for unsafe protocols, allowing remote code execution if the victim's git transport policy permits the 'ext' protocol. The merge_base and IndexFile.move methods forward caller-controlled arguments without proper unsafe option checks, creating latent injection surfaces. These issues were verified on the main branch after the latest release, and a fix is available in version 1.2.0.post0_16.

References

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