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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-44373

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

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

nitrojs nitro

  • < 3.0.260429-betaaffected

nitrojs nitropack

  • < 2.13.4affected

References