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bdu:2026-12716

BREW-aider-CVE-2026-78675 — GitPython: Arbitrary local file content disclosure via [include] directive in untrusted .gitmodules (SubmoduleConfigPar…

Affected: Homebrew: aider

# [HIGH] Arbitrary local file content disclosure via `[include]` directive in untrusted `.gitmodules` (`SubmoduleConfigParser` never disables `merge_includes`)

- **CWE:** CWE-200 (Exposure of Sensitive Information) / CWE-73 (External Control of File Name or Path) - **Affected component:** `git/objects/submodule/base.py`, `Submodule._config_parser()` (~line 273) constructing `SubmoduleConfigParser(fp_module, read_only=read_only)`; `git/config.py`, `GitConfigParser.__init__` (`merge_includes` default), `GitConfigParser.read()`/`_included_paths()` (include-path resolution, ~lines 630-685), `GitConfigParser._read()` (~line 493-498, `MissingSectionHeaderError`) - **Affected version:** GitPython at HEAD (`9729ed3b948f2bde09f1f188c5311e172212b67e`, 2026-08-05, VERSION `3.1.58`)

## Reachability `GitConfigParser.__init__` defaults `merge_includes=True`: any config file it parses has its `[include]` (and, when a `repo=` is supplied, `[includeIf ...]`) directives followed and merged in. The maintainers already recognized this as dangerous for one specific case and fixed it in commit `41ecc6a4` ("Disable merge_includes in config writers"), which passes `merge_includes=False` when `Repo.config_writer()` builds its parser (`git/repo/base.py`).

That fix never touched `Submodule._config_parser()`. This method builds the parser used for **every** read of a repo's submodule configuration — `repo.submodules`, `Submodule.iter_items()`, `Submodule.config()` — via `SubmoduleConfigParser(fp_mod…

EUVD-2026-358606

fkie_cve-2026-78675

GitPython before 3.1.59 fails to disable merge_includes when parsing .gitmodules, allowing attackers to disclose local file content by including arbitrary file paths via [include] directives. Attackers can craft a malicious .gitmodules file with include directives pointing to sensitive files; when repo.submodules is accessed, GitConfigParser raises MissingSectionHeaderError embedding the target file's first line verbatim in the exception message.

GHSA-7833-fr7j-v32q — GitPython: Arbitrary local file content disclosure via [include] directive in untrusted .gitmodules (SubmoduleConfigPar…

Affected: PyPI: GitPython

# [HIGH] Arbitrary local file content disclosure via `[include]` directive in untrusted `.gitmodules` (`SubmoduleConfigParser` never disables `merge_includes`)

OESA-2026-3699 — python-GitPython security update

Affected: openEuler:24.03-LTS-SP1: python-GitPython

GitPython is a python library used to interact with git repositories, high-level like git-porcelain, or low-level like git-plumbing. Security Fix(es):

GitPython before 3.1.57 contains an incomplete denylist in the unsafe_git_archive_options guard that omits --add-file and --add-virtual-file options. Attackers can supply these options to Repo.archive() to read arbitrary files from the filesystem and include them in the returned archive.(CVE-2026-73619)

GitPython before 3.1.57 fails to guard git option forwarding in IndexFile.checkout() and TagReference.create(), allowing attackers to pass unsafe options via kwargs. Attackers can use --prefix to overwrite arbitrary files with repository content or -F to read arbitrary files returned in-band.(CVE-2026-73620)

GitPython before 3.1.56 contains an argument injection vulnerability in the Commit.count() method, which forwards keyword arguments to 'git rev-list' without the check_unsafe_options guard present in the sibling iter_items method. An attacker who can control options passed to Commit.count (e.g., via an application that forwards a user-supplied options dict) can supply output=<path>, causing 'git rev-list --output=<path>' to open and truncate the target file to zero bytes before revision parsing. This allows destruction/blanking of an arbitrary file at the process's privilege level (no content control, 0-byte truncation).(CVE-2026-73621)

GitPython before 3.1.55 fails to disable env…

openSUSE-SU-2026:21874-1 — Security update for python-GitPython

Security update for python-GitPython

PYSEC-2026-3785

Affected: PyPI: gitpython