What is CVE-2026-91986?

CVE-2026-91986 is a medium-severity vulnerability in Gitoxidelabs Gitoxide, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.4/10. Published 2026-09-15.

How severe is CVE-2026-91986?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Gitoxidelabs Gitoxide

CVE-2026-91986

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.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Gitoxidelabs Gitoxide

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-91986?: CVE-2026-91986 is a medium-severity vulnerability in Gitoxidelabs Gitoxide, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.4/10. Published 2026-09-15.
How severe is CVE-2026-91986?: Medium severity. CVSS v3 base score is 5.4 out of 10.