Is CVE-2026-4923 actively exploited?

No active exploitation of CVE-2026-4923 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4923 be exploited remotely?

Yes. CVE-2026-4923 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4923?

CVE-2026-4923 has a CVSS score of 5.9 (MEDIUM).

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MEDIUM

CVE-2026-4923

CWE-1333Published: March 26, 2026· Updated: Mar 30, 2026

5.9

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.2th

Official Description

Impact:

When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path.

Unsafe examples:

/*foo-*bar-:baz

/*a-:b-*c-:d

/x/*a-:b/*c/y

Safe examples:

/*foo-:bar

/*foo-:bar-*baz

Patches:

Upgrade to version 8.4.0.

Workarounds:

If you are using multiple wildcard parameters, you can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.

NVD Source

Technical Analysis

CVE-2026-4923 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 availability disruption (denial of service), with a CVSS base score of 5.9.