Is CVE-2026-22860 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-22860, but active exploitation has not been confirmed.

Can CVE-2026-22860 be exploited remotely?

Yes. CVE-2026-22860 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-22860?

CVE-2026-22860 has a CVSS score of 7.5 (HIGH) and an EPSS exploitation probability of 0.07%.

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HIGHPOC

CVE-2026-22860

CWE-22Published: February 18, 2026· Updated: Feb 19, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:13.3th

Official Description

Rack is a modular Ruby web server interface. Prior to versions 2.2.22, 3.1.20, and 3.2.5, `Rack::Directory`’s path check used a string prefix match on the expanded path. A request like `/../root_example/` can escape the configured root if the target path starts with the root string, allowing directory listing outside the intended root. Versions 2.2.22, 3.1.20, and 3.2.5 fix the issue.

NVD Source

Technical Analysis

CVE-2026-22860 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

A proof-of-concept (PoC) exploit exists for CVE-2026-22860. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.