# CVE-2026-82253: gitoxide before 0.82.0 Path Traversal via Submodule Name Validation Bypass

CVE-2026-82253 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-82253, released September 5, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-82253
- Priority: High
- CVSS: 7.5 (Important)
- EPSS: 0.0066
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 28, 2026
- Weakness: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-82253

## Description

gitoxide (Rust crates gix <= 0.72.0 and gix-validate <= 0.10.0) contains a path traversal vulnerability. The submodule name validation function in gix-validate only checks the first occurrence of '..' via name.find(b".."), allowing crafted names such as 'a..b/../../../.git/' to bypass the check; additionally this validation is never invoked in production code paths. Combined with a trust inheritance flaw in Submodule::open(), where the parent repository's git_dir_trust (Trust::Full) is cloned and the ownership verification is skipped, an attacker can craft a malicious .gitmodules file so that a victim tool built on gitoxide reads arbitrary git repository configuration (including embedded credentials) with full trust, bypassing safe-directory protections. Fixed in gix 0.82.0 and gix-validate 0.11.1.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | rust-gix Debian 14 | 0.83.0-1 | [DEBIAN-CVE-2026-82253](https://patchblox.com/security/data/fix/linux/debian-cve-2026-82253.md) | Sep 5, 2026 |
| Linux | rust-gix-validate Debian 14 | 0.11.1-1 | [DEBIAN-CVE-2026-82253](https://patchblox.com/security/data/fix/linux/debian-cve-2026-82253.md) | Sep 5, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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