Threats Tagged 'cve-2026-76220'

Red Hat Lightspeed in Satellite analyzes system health and configuration by applying predefined rules to a small set of local data, such as installed packages, running services, and configuration settings.

Red Hat Lightspeed in Satellite analyzes system health and configuration by applying predefined rules to a small set of local data, such as installed packages, running services, and configuration settings.

Red Hat Satellite is a system management solution that allows organizations to configure and maintain their systems without the necessity to provide public Internet access to their servers or other client systems. It performs provisioning and configuration management of predefined standard operating environments. Security Fix(es): * ansible-core: argument injection in ansible-galaxy role install leads to arbitrary code execution (CVE-2026-11332) * ansible-core: argument injection in ansible-galaxy collection install via git clone (incomplete fix for CVE-2026-11332) (CVE-2026-16493) * openvox-server: jackson-databind: Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512) * puppetserver: jackson-databind: Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512) * rubygem-jwt: ruby-jwt: Authentication bypass due to empty key in HMAC verification (CVE-2026-45363) * python-aiohttp: AIOHTTP: Denial of Service via malformed HTTP responses (CVE-2026-69244) * python-aiohttp: AIOHTTP: HTTP Request Smuggling via WebSocket Upgrade (CVE-2026-69243) * python-aiohttp: AIOHTTP: Arbitrary code execution via untrusted input to CookieJar.load() (CVE-2026-34993) * openvox-server: jackson-core: Denial of Service via incomplete fix in async JSON parser (CVE-2026-68494) * openvox-server: Eclipse Jetty: Information disclosure due to retained HTTP/1.1 trailers across connections (CVE-2026-10051) * python-gitpython: GitPython: Arbitrary File Overwrite via improper git option validation (CVE-2026-73624) * python-gitpython: GitPython: Remote Code Execution via kwarg value smuggling (CVE-2026-73625) * python-gitpython: GitPython: Information disclosure via environment variable expansion in URL handling (CVE-2026-73622) * python-gitpython: GitPython: Remote Code Execution via malicious Git template (CVE-2026-73623) * python-gitpython: GitPython: Arbitrary file overwrite and read via unsafe git option forwarding (CVE-2026-73620) * python-gitpython: GitPython: Arbitrary code execution via improper validation of clone options (CVE-2026-42284) * python3.12-gitpython: GitPython: Arbitrary code execution via improper validation of clone options (CVE-2026-42284) * python-gitpython: GitPython: Arbitrary command execution due to bypass of dangerous Git option checks (CVE-2026-42215) * python3.12-gitpython: GitPython: Arbitrary command execution due to bypass of dangerous Git option checks (CVE-2026-42215) * python-gitpython: GitPython: Arbitrary code execution via injected newlines in Git configuration (CVE-2026-44244) * python3.12-gitpython: GitPython: Arbitrary code execution via injected newlines in Git configuration (CVE-2026-44244) * python-gitpython: GitPython: Arbitrary file creation via path traversal in .gitmodules submodule names (CVE-2026-76222) * python3.12-gitpython: GitPython: Arbitrary file creation via path traversal in .gitmodules submodule names (CVE-2026-76222) * python-gitpython: GitPython: Remote Code Execution via malicious Git hooks (CVE-2026-76218) * python3.12-gitpython: GitPython: Remote Code Execution via malicious Git hooks (CVE-2026-76218) * python-gitpython: GitPython: Arbitrary command execution via crafted kwargs (CVE-2026-76220) * python3.12-gitpython: GitPython: Arbitrary command execution via crafted kwargs (CVE-2026-76220) * python-gitpython: GitPython: Arbitrary File Overwrite via `git read-tree` option injection (CVE-2026-76219) * python3.12-gitpython: GitPython: Arbitrary File Overwrite via `git read-tree` option injection (CVE-2026-76219) * python-gitpython: GitPython: Arbitrary code execution via config-name injection (CVE-2026-76221) * python3.12-gitpython: GitPython: Arbitrary code execution via config-name injection (CVE-2026-76221)

CVE-2026-76220 is a command injection vulnerability in GitPython affecting versions prior to 3.1.58. It allows bypassing the unsafe options guard by combining a single-character keyword argument with split_single_char_options set to false, leading to arbitrary OS command execution via the git --upload-pack option. This flaw is an incomplete fix of a previous vulnerability and impacts all guarded methods forwarding kwargs with this configuration.

## Summary The `check_unsafe_options` guard can be bypassed on every guarded method (clone/clone_from, fetch/pull/push, ls_remote, iter_commits, blame, archive) by combining a single-character kwarg with `split_single_char_options=False`. The guard's candidate list omits the smuggled option, but `transform_kwarg` emits a JOINED `-n<value>` argv token that git parses as `--upload-pack=<cmd>`, yielding arbitrary command execution at the default `allow_unsafe_options=False`. This is an incomplete-fix bypass of commit `e8d0fbf7` (the fix for GHSA-r9mr-m37c-5fr3), which only emits value-derived candidates when `split_single_char_options` is True. ## Root Cause `_option_candidates` derives value-token candidates only under `if len(key)==1 and split_single_char_options:` (cmd.py:1048, added by `e8d0fbf7`). With `split_single_char_options=False`, `_option_candidates([], {"n":"utouch <cmd>;git-upload-pack"})` returns only `['-n']` (not on the denylist), so the guard passes. But `transform_kwarg('n', value, split_single_char_options=False)` emits the JOINED token `-nutouch <cmd>;git-upload-pack` (cmd.py:1631). git clusters value-less short flags then parses `-u<cmd>` = `--upload-pack=<cmd>` → command execution. The hardened guard WOULD block the joined token if it saw it — the flaw is it never receives it. ## Impact Arbitrary OS command execution as the host process (via `--upload-pack`) at default `allow_unsafe_options=False`, affecting all guarded methods that forward kwargs. Precondition: the app forwards a user-controlled kwargs dict containing `split_single_char_options=False` plus a single-char key (same user-dict-forwarding model GHSA-r9mr-m37c-5fr3 accepts). ## Proof of Concept ```python from git import Repo Repo.clone_from(src, dst, n="utouch /tmp/ACE;git-upload-pack", split_single_char_options=False) # /tmp/ACE created -> ACE ``` ## Attack Chain 1. Entry: app forwards user kwargs to `Repo.clone_from(url, path, **kwargs)`: `{split_single_char_options: False, n: 'utouch /tmp/ACE;git-upload-pack'}`. 2. Check: `check_unsafe_options(_option_candidates([], kwargs), unsafe_git_clone_options)`. Guard: denylist includes `--upload-pack`/`-u`. Bypass proof: `_option_candidates` yields only `['-n']` (value token skipped because `split=False`); guard never sees `-u`. 3. Sink: `transform_kwarg` emits joined token (cmd.py:1631). argv (observed): `['git','clone','-v','-nutouch /tmp/ACE;git-upload-pack','--','<src>','<dst>']`. 4. Impact: git clusters `-n` + `-u<cmd>` → runs upload-pack command → ACE. ## Bypass Evidence Independently reproduced (gate harness, default `allow_unsafe_options=False`): the `split=False` payload created the marker `VH05_GATE_ACE` (ACE); the clone returned normally (guard bypassed). Control: `n='--upload-pack=…'` (split default True) → `UnsafeOptionError: --upload-pack is not allowed`. Fix-commit read: `e8d0fbf7` extends candidates only under `if len(key)==1 and split_single_char_options:` — split=False skips value emission. Also confirmed the earlier clustering-parse fix (commit `56806080`) does not cover this because the guard only ever receives `['-n']`. ## Affected Versions `GitPython <= 3.1.57` (code present verbatim on the latest release tag). ## Suggested Fix Make `_option_candidates` emit value-derived candidates regardless of `split_single_char_options` (i.e. also for the joined `-n<value>` form), OR run `check_unsafe_options` over the fully-transformed argv rather than the reconstructed name-only candidate list. --- Reported by **zx (Jace)** — GitHub: @manus-use