🛡️ CVE-2026-66391 — wicket

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: None.

Weakness class

CVE-2026-66391 is classified as CWE-330: Use of Insufficiently Random Values. Values that must be unpredictable are generated in a way an attacker can guess or reproduce.

Affected software

CVE-2026-66391 is recorded against 1 package.

• wicket (from 10.0.0 up to 10.10.0)

Timeline and source

Published on 27 July 2026 and last revised on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

lists.apache.org
www.openwall.com

Other advisories for this package

wicket has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-66390 (6.1 Medium, published 27 Jul 2026)
• CVE-2026-42509 (6.1 Medium, published 6 May 2026)
• CVE-2026-40010 (9.1 Critical, published 6 May 2026)
• CVE-2026-43975 (6.5 Medium, published 6 May 2026)
• CVE-2026-43646 (7.5 High, published 6 May 2026)
• CVE-2024-53299 (6.5 Medium, published 23 Jan 2025)
• CVE-2024-36522 (9.8 Critical, published 12 Jul 2024)
• CVE-2024-27439 (6.5 Medium, published 19 Mar 2024)

Same weakness in other software

These advisories are the same class of weakness (CWE-330: Use of Insufficiently Random Values) in other software:

• CVE-2026-18531 (5.3 Medium, published 5 Aug 2026)
• CVE-2026-71225 (6.5 Medium, published 5 Aug 2026)
• CVE-2026-46351 (8.1 High, published 16 Jul 2026)
• CVE-2026-47703 (5.3 Medium, published 15 Jul 2026)
• CVE-2026-14570 (7.5 High, published 5 Jul 2026)
• CVE-2022-31008 (8.0 High, published 30 Jun 2026)
• CVE-2026-57082 (5.9 Medium, published 30 Jun 2026)
• CVE-2026-45673 (6.8 Medium, published 12 Jun 2026)

Details

Affected Packages

References