CVE-2026-82247: gitoxide before 0.37.1 HTTP Basic credential leak via URL parsing

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-28 · updated 2026-08-28
Weakness: CWE-522

Description

gitoxide's gix-url crate (<= 0.32.0, fixed in 0.37.1) uses a hand-rolled URL parser that does not treat '?' or '#' as terminating the authority component, contrary to RFC 3986. As a consequence, gix-transport's HTTP redirect identity guard (can_reuse_identity) compares the wrong host and fails open. An attacker controlling a redirect response can craft a Location header of the form <attacker-authority>?@<original-authority> so that gitoxide sends the caller's HTTP Basic Authorization credentials to an unintended host. gix-transport is affected in versions <= 0.49.0 (fixed in 0.58.1).

Affected products

GitoxideLabs gitoxide: before 0.37.1; before 0.58.1 — fixed in 0.37.1, 0.58.1

How to fix

Upgrade to a fixed version: GitoxideLabs gitoxide 0.37.1, 0.58.1. Check the vendor advisory for mitigations.

References

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