🛡️ CVE-2026-23904 — kyuubi

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 low.

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:L

• 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: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2026-23904 is classified as CWE-923: Improper Restriction of Communication Channel to Intended Endpoints. The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.

Affected software

CVE-2026-23904 is recorded against 1 package.

• kyuubi (from 1.8.0 up to 1.12.0)

Timeline and source

Published on 29 July 2026 and last revised on 5 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
lists.apache.org
www.openwall.com

Other advisories for this package

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

• CVE-2026-62391 (8.1 High, published 31 Jul 2026)
• CVE-2026-52680 (9.8 Critical, published 30 Jul 2026)
• CVE-2025-66518 (8.8 High, published 5 Jan 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-923: Improper Restriction of Communication Channel to Intended Endpoints) in other software:

• CVE-2026-62836 (8.7 High, published 7 Aug 2026)
• CVE-2026-18655 (6.5 Medium, published 3 Aug 2026)
• CVE-2026-63226 (5.8 Medium, published 23 Jul 2026)
• CVE-2026-59841 (7.5 High, published 14 Jul 2026)
• CVE-2026-33803 (6.5 Medium, published 9 Jul 2026)
• CVE-2026-57028 (7.3 High, published 9 Jul 2026)
• CVE-2016-5362 (8.0 High, published 6 Jul 2026)
• CVE-2015-8914 (9.5 Critical, published 29 Jun 2026)

Details

Affected Packages

References