Path Traversal in Nitro

CVE-2026-44373

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 ou…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (13.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-44373?
CVE-2026-44373 is a medium-severity vulnerability in Nitro, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-05-13.
How severe is CVE-2026-44373?
Medium severity. CVSS v3 base score is 5.3 out of 10.