Is CVE-2026-42608 actively exploited?

No active exploitation of CVE-2026-42608 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42608 be exploited remotely?

Yes. CVE-2026-42608 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42608?

CVE-2026-42608 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2026-42608

CRITICAL

CVE-2026-42608

CWE-22Published: May 11, 2026· Updated: May 13, 2026

9.1

CVSS v3.1

EPSS:0.10%probability of exploitation in 30 daysPercentile:27.1th

Official Description

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, there is a Path Traversal vulnerability within the FormFlash core component. By manipulating the session_id (passed as __form-flash-id in POST requests), an unauthenticated attacker can traverse the filesystem to create arbitrary directories and write an index.yaml file containing attacker-controlled data. This vulnerability can lead to unauthorized modification of application behavior, potential data integrity issues, and service disruption in production environments. This vulnerability is fixed in 2.0.0-beta.2.

NVD Source

Technical Analysis

CVE-2026-42608 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), full integrity compromise (data manipulation), with a CVSS base score of 9.1.