# CVE-2026-82255: gitoxide HTTP credential leak via redirect in curl backend

Source: https://junglewise.ai/threats/cve-2026-82255-gitoxide-http-credential-leak-via-redirect-in-curl-backend  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-28. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-82255 · Severity: medium · CVSS 6.8 · Published 2026-08-28

gitoxide is a high-performance Git implementation library used by developers to interact with Git repositories. A vulnerability in the curl-based HTTP transport allows attackers to steal authentication credentials (tokens and passwords) by redirecting legitimate repository requests to attacker-controlled servers. This could enable unauthorized access to private repositories and compromise sensitive source code or deployment secrets.

Technologies: [GitoxideLabs Gix-Transport](https://junglewise.ai/threats/technologies/gix-transport). Vendors: [GitoxideLabs](https://junglewise.ai/threats/vendors/gitoxidelabs).

## Quick answers

**Is CVE-2026-82255 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82255 being exploited in the wild.

**How severe is CVE-2026-82255?** Medium severity, with a CVSS score of 6.8, published 28 August 2026.

**Which products and versions are affected?** GitoxideLabs Gix-Transport >=0.25.4, <=0.55.0.

**Is there a fix for CVE-2026-82255?** A patch was published on 2026-04-25: Fix available in gix-transport 0.56.0 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-82255 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-82255?** Check whether you run GitoxideLabs Gix-Transport at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an insufficiently protected credential leak (CWE-522) in gix-transport's curl backend. When a Git server responds with an HTTP redirect (302) during credential-protected operations, gitoxide rewrites subsequent requests to the redirected host but continues to validate credentials against the original URL rather than the effective URL after redirect. An attacker can redirect requests to a malicious server and receive Authorization headers containing Base64-encoded credentials, or downgrade HTTPS connections to cleartext HTTP while credentials are transmitted. The vulnerability affects gix-transport versions 0.25.4 through 0.55.0; versions 0.56.0 and later patch the issue. The reqwest backend is not affected. Attack requires the victim to clone or interact with a repository configured with credentials, and the attacker must control a server that can receive HTTP redirects.

## Affected products

- GitoxideLabs gix-transport >=0.25.4, <=0.55.0

## Timeline

- 2026-04-25: disclosed: GitHub Security Advisory GHSA-9857-6mw7-fq2m published
- 2026-08-28: advisory: CVE-2026-82255 assigned and published to NVD
- 2026-04-25: patched: Fix available in gix-transport 0.56.0 and later

## References

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

## Related threats

- [gitoxide gix-transport CR/LF/NUL injection in git-daemon connect request](https://junglewise.ai/threats/cve-2026-91986-gitoxide-gix-transport-cr-lf-nul-injection-in-git-daemon-connect)
- [gitoxide gix-url URL parsing authority termination bypass](https://junglewise.ai/threats/cve-2026-82247-gitoxide-gix-url-url-parsing-authority-termination-bypass)