Medium 5.3Published May 13, 2026

CVE-2026-44372Nitro: Open Redirect via Protocol-Relative URL Bypass in Wildcard Route Rules

Updated under an hour ago (Oct 27, 2026, 11:00 AM ET)

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It affects nitrojs nitro and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for nitrojs nitro

Exploited in the last 30 days

Nitro is a next generation server toolkit. Prior to 3.0.260429-beta, an attacker could turn a redirect route rule using wildcards rewrite into a cross-host redirect by sliding an extra slash in after the rule prefix. This vulnerability is fixed in 3.0.260429-beta.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness (CWE): CWE-601
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

nitrojs nitro nitrojs:nitro (from the name)	before 3.0.260429-beta	CNA record
nitrojs nitropack nitrojs:nitropack (from the name)	before 2.13.4	CNA record
nitro nitro nitro:nitro	before 2.13.4; after 2.13.4 before 3.0.260429	NVD

References

References

https://github.com/nitrojs/nitro/security/advisories/GHSA-9phm-9p8f-hw5m	x-refsource-confirm, vendor-advisory
https://github.com/nitrojs/nitro/pull/4236	x-refsource-misc, issue-tracking, patch
https://github.com/nitrojs/nitro/releases/tag/v2.13.4	x-refsource-misc, release-notes
https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.