🛡️ CVE-2026-5598 on Maven (Root.io) — bcprov-jdk18on

Distribution advisory

This page covers CVE-2026-5598 as tracked by Maven (Root.io), for the package bcprov-jdk18on. The fix is available in version 1.81-root.io.3; earlier versions remain affected.

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 high, integrity none, 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:H/I:N/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: High — total loss, or loss the attacker controls.
• Integrity impact: None.
• Availability impact: None.

Weakness class

ROOT-APP-MAVEN-CVE-2026-5598 is classified as CWE-385: Covert Timing Channel. Covert timing channels convey information by modulating some aspect of system behavior over time, so that the program receiving the information can observe system behavior and infer protected information.

Affected software

ROOT-APP-MAVEN-CVE-2026-5598 is recorded against 2 packages.

• io.root.org.bouncycastle:bcprov-jdk18on (fixed in 1.81-root.io.3)
• org.bouncycastle:bcprov-jdk18on (fixed in 1.81-aikido.3)

Timeline and source

Published on 6 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

Other advisories for this package

io.root.org.bouncycastle:bcprov-jdk18on has other advisories on record. If you are patching this one, these are worth checking on the same host:

• ROOT-APP-MAVEN-CVE-2026-0636 (5.0 Medium, published 6 Aug 2026)
• ROOT-APP-MAVEN-CVE-2025-14813 (9.5 Critical, published 6 Aug 2026)
• ROOT-APP-MAVEN-CVE-2024-29857 (5.0 Medium, published 4 Aug 2026)
• ROOT-APP-MAVEN-CVE-2025-8885 (5.0 Medium, published 15 Jul 2026)
• ROOT-APP-MAVEN-CVE-2024-34447 (5.0 Medium, published 15 Jul 2026)
• ROOT-APP-MAVEN-CVE-2024-30172 (5.0 Medium, published 15 Jul 2026)
• ROOT-APP-MAVEN-CVE-2024-30171 (5.0 Medium, published 15 Jul 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-385: Covert Timing Channel) in other software:

• CVE-2025-59425 (8.0 High, published 7 Jul 2026)
• CVE-2026-6478 (5.0 Medium, published 18 May 2026)
• CVE-2026-5598 (8.0 High, published 17 Apr 2026)
• CVE-2025-69893 (4.6 Medium, published 14 Apr 2026)
• CVE-2025-66442 (5.1 Medium, published 1 Apr 2026)
• CVE-2026-41390 (8.0 High, published 31 Mar 2026)
• CVE-2025-9231 (6.5 Medium, published 30 Sep 2025)
• CVE-2025-49087 (4.0 Medium, published 20 Jul 2025)

CVE-2026-5598 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Affected Packages

References