git-fastclone before 1.0.1 permits arbitrary shell command execution from .gitmodules. If an attacker can instruct a user to run a…

Description

git-fastclone before 1.0.1 permits arbitrary shell command execution from .gitmodules. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories.

Scores

EPSS (exploitation in 30 days)

5.2% · top 7.5% of all CVEs (3 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Weakness

• Arbitrary Command Execution
• CWE-77 (opens in a new tab)Other CVEs with CWE-77

Affected products

• git-fastclone ruby gem All versions before 1.0.1

  • affected git-fastclone ruby gem All versions before 1.0.1

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• RubyGemsgit-fastcloneGHSA-8gg6-3r63-25m8 (opens in a new tab)

References (3)

• https://hackerone.com/reports/104465 (opens in a new tab)x_refsource_MISCx_transferred
• 81433 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• https://github.com/square/git-fastclone/pull/2 (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-8gg6-3r63-25m8 (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2015-8968](https://trackcve.app/badge/CVE-2015-8968.svg)](https://trackcve.app/cve/CVE-2015-8968)

Record last updated 6 Aug 2024, 08:36 UTC.