Skip to content
Fencer Vulns
medium 5.4

CVE-2026-91986 json

gitoxide gix-transport before 0.59.2 CR/LF/NUL Injection

published 2026-09-15 54 d ago modified 2026-09-23 46 d ago also EUVD-2026-78657

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

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.

Patch / fix

  • GitoxideLabs gitoxide 0.59.2
  • stgit openSUSE Leap 16.0 2.7.0-bp160.1.1
  • stgit openSUSE Tumbleweed 2.7.0-1.1
  • gitoxide openSUSE Leap 16.0 0.60.0-bp160.1.1
  • openai-codex openSUSE Tumbleweed 0.158.0-1.1
  • gitoxide openSUSE Leap 16.0 0.56.0-bp160.2.1
  • gitoxide openSUSE Tumbleweed 0.58.0-2.1

opensuse advisories openSUSE-SU-2026:22204-1openSUSE-SU-2026:12223-1openSUSE-SU-2026:22126-1openSUSE-SU-2026:11923-1openSUSE-SU-2026:21955-1openSUSE-SU-2026:11857-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-91986 updated cvss 5.4

gix-transport: gix-transport: Information disclosure and virtual host spoofing via control character injection

  • Red Hat Enterprise Linux 8 rls, rust, cargo, clippy, rustfmt, rust-gdb, +8 more Red Hat Enterprise Linux 9 rust, cargo, clippy, rustfmt, rust-gdb, rust-src, +9 more Red Hat Enterprise Linux 10 igvm 0.4.0-3.el10, rust 1.98.1-1.el10 Red Hat Enterprise Linux AI (RHEL AI) 3 rust 1.98.1-1.el10
    affected: no fix available “Fix deferred”
  • Red Hat Hardened Images rust 1.98.1-1.el10, openshell 0.0.100-0.2.hum1
    not affected: component not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
48 d ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-rc7h-wp5f-w3g5 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CNA 4.0 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • GitoxideLabs gitoxide

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.