https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-01T16:31:46.279653+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-73625 CVE-2026-73625 — GitPython before 3.1.54 Remote Code Execution via kwarg value smuggling 2026-10-01T16:31:46.326795+00:00

Affected: gitpython-developers GitPython

GitPython versions before 3.1.54 contain a remote code execution vulnerability in the check_unsafe_options guard that can be bypassed by smuggling git options inside single-character kwarg values. Attackers can supply crafted option dictionaries to clone_from, fetch, pull, push, ls_remote, iter_commits, blame, or archive methods to execute arbitrary OS commands via the --upload-pack parameter.

 https://vulnerability.circl.lu/vuln/ghsa-r9mr-m37c-5fr3 GHSA-r9mr-m37c-5fr3 — GitPython: Unsafe git option guard bypass via single-character kwarg value token smuggling enables arbitrary command ex… 2026-10-01T16:31:46.326907+00:00

Affected: PyPI: GitPython

## Summary GitPython's `check_unsafe_options` guard (the control introduced by CVE-2026-42215 / GHSA-2f96 and hardened since) can be bypassed for **every** guarded method (`clone`/`clone_from`, `fetch`/`pull`/`push`, `ls_remote`, `iter_commits`, `blame`, `archive`) by smuggling an option token inside the VALUE of a single-character kwarg. In the default `allow_unsafe_options=False` configuration this yields arbitrary command execution via `--upload-pack`.

## Root Cause The guard builds its candidate option list from kwarg KEYS only: `_option_candidates([], {"n":"--upload-pack=<cmd>"})` returns `['-n']` (cmd.py:1042-1046 derives the candidate from the key, never the value). `-n` is not on the denylist, so `check_unsafe_options` passes. But `transform_kwarg('n', value, split_single_char_options=True)` (cmd.py:1600-1606) emits **two** argv tokens `['-n', '--upload-pack=<cmd>']`. git then parses the second token as `--upload-pack` and executes the attacker-supplied command. The guard never inspects the value that becomes a separate argv token.

## Impact Arbitrary OS command execution as the host process (via `--upload-pack`) in the default configuration, affecting all guarded methods since they all build candidates through the name-only `_option_candidates`.

## Proof of Concept ```python from git import Repo Repo.clone_from(bare_repo, out_dir, n="--upload-pack=touch /tmp/ACE;git-upload-pack") # /tmp/ACE created -> ACE. Direct-name form upload_pack="..." is correctly BLOCKED.…

 https://vulnerability.circl.lu/vuln/pysec-2026-3953 PYSEC-2026-3953 2026-10-01T16:31:46.327016+00:00

Affected: PyPI: gitpython

GitPython versions before 3.1.54 contain a remote code execution vulnerability in the check_unsafe_options guard that can be bypassed by smuggling git options inside single-character kwarg values. Attackers can supply crafted option dictionaries to clone_from, fetch, pull, push, ls_remote, iter_commits, blame, or archive methods to execute arbitrary OS commands via the --upload-pack parameter.