CVE-2026-58061 Details
Description
In Bouncy Castle for Java before 1.85, CCM-family modes write plaintext to caller buffer before tag check. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
A vulnerability exists in Bouncy Castle for Java in versions prior to 1.85, as well as in Bouncy Castle for Java LTS prior to 2.73.12 and in Bouncy Castle for Java FIPS (BC-FJA) versions prior to 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series). This vulnerability arises because CCM-family modes decrypt ciphertext into the caller's buffer before verifying the authentication tag. As a result, if the tag check fails, unverified plaintext remains in the buffer, potentially leading to the exposure of sensitive data.
Users can upgrade to Bouncy Castle for Java version 1.85 or later, or to Bouncy Castle for Java LTS version 2.73.12 or later. For Bouncy Castle for Java FIPS, users should upgrade to version 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) or 2.1.3 (2.1.X series).
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 3, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/bcgit/bc-java/commit/08d675106bb663ddcc6ec0a4af6f6f62f512697b | bcorg | Patch |
| https://github.com/bcgit/bc-java/commit/cd4a5ab3ad619ff03c7767c1b8b19d5dea2970af | bcorg | Patch |
| https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9058061 | bcorg | Third Party AdvisoryPatch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-354 | Improper Validation of Integrity Check Value | bcorg |
Affected Products
| Product | Versions |
|---|---|
| bouncycastle bc-java | < 1.85 |
CPE
Remediation
| |
| bouncycastle bouncy castle for java lts | <= 2.73.11 |
CPE
Remediation
| |
| bouncycastle fips java api | >= 1.0.0, < 1.0.2.7 >= 2.0.0, < 2.0.2 >= 2.1.0, < 2.1.3 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 2, 2026 | Initial Analysis | [email protected] |
| Aug 3, 2026 | CVE Modified | CISA-ADP |
| Aug 3, 2026 | CVE Modified | bcorg |
| Aug 3, 2026 | New CVE Received | bcorg |