Bug 2536980 - CVE-2026-91986 rust: gix-transport: Information disclosure and virtual host spoofing via control character injection [fedora-all]
Summary: CVE-2026-91986 rust: gix-transport: Information disclosure and virtual host s...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: rust
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Rust SIG
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["d15c6690-8fb6-41e5-a515-0...
Depends On:
Blocks: CVE-2026-91986
TreeView+ depends on / blocked
 
Reported: 2026-09-18 11:23 UTC by Marian Rehak
Modified: 2026-09-18 17:08 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-09-18 17:08:14 UTC
Type: ---
Embargoed:

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Description Marian Rehak 2026-09-18 11:23:23 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

gitoxide gix-transport before 0.59.2 fails to filter control characters in git-daemon connect requests, allowing attackers to inject NUL/CR/LF bytes via crafted git URLs. Attackers can inject extra NUL-delimited protocol fields to spoof virtual hosts or inject newlines into daemon requests and logs.
Comment 1 Josh Stone 2026-09-18 17:08:14 UTC 
Cargo's implementation to use gitoxide for fetching is behind an unstable option, so it is not officially supported.

Furthermore, the build manifest is considered a trusted input, so there's no attacker control of git URLs here.
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