CVE-2026-44373mediumobserved exploitationCWE-22

CVE-2026-44373: medium-severity vulnerability in nitrojs nitro

Nitro: Proxy scope bypass via percent-encoded path traversal in `routeRules`

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35Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck.

ssvc Attendcvss 5.3epss 0.5%
from disclosure to weapon
Published on NVDMay 13
VulnCheck+161d
Nitro is a next generation server toolkit. Prior to 3.0.260429-beta, an attacker could bypass a proxy route rule by sending percent-encoded path traversal (..%2f) in the URL, causing Nitro to forward a request that the upstream resolved outside the configured scope. This vulnerability is fixed in 3.0.260429-beta.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
nitrojs · nitronitrojs · nitropack
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