CVE-2026-13586
High
Description
In Bouncy Castle for Java before 1.85, PKCS#12 MAC and bag-decryption KDF iteration-count bound (DoS). 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).
SeverityHigh
CVSS7.5
Exploit probability—
ProductBouncycastle Bouncy Castle For Java Lts
PublishedAug 3, 2026
First seenAug 3, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- bouncycastle bc-java1.85 or later
- bouncycastle fips_java_api1.0.2.7, 2.0.2, 2.1.3 or later
Patches
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| bouncycastle bouncy_castle_for_java_lts | v ≤ 2.73.11 | — |
| bouncycastle bc-java | v < 1.85 | 1.85 |
| bouncycastle fips_java_api | 1.0.0 ≤ v < 1.0.2.7, 2.0.0 ≤ v < 2.0.2, 2.1.0 ≤ v < 2.1.3 | 1.0.2.7, 2.0.2, 2.1.3 |
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