Vulnerability · Published May 13, 2026 · Assigned by GitHub_M
CVE-2026-44372Nitro: Open Redirect via Protocol-Relative URL Bypass in Wildcard Route Rules
Medium 5.3
In plain English
A medium-severity open redirect in nitro from nitrojs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)5.3Medium
Exploit odds (30 days)0.3%top 79.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | nitro | 3.0.260429-beta | GHSA-9phm-9p8f-hw5m |
| npm | nitropack | 2.13.4 | GHSA-9phm-9p8f-hw5m |
Affected products (as reported)
Weakness: CWE-601 · Vector: 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
References
- https://github.com/nitrojs/nitro/security/advisories/GHSA-9phm-9p8f-hw5m x_refsource_CONFIRM
- https://github.com/nitrojs/nitro/pull/4236 x_refsource_MISC
- https://github.com/nitrojs/nitro/releases/tag/v2.13.4 x_refsource_MISC
- https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta x_refsource_MISC