# OPENSUSE-SU-2026:21538-1: bouncycastle security update

OPENSUSE-SU-2026:21538-1, released August 6, 2026, fixes 32 CVEs in bouncycastle (version 1.85-160000.1.1). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2026-21538-1
- Platform: Linux
- Released: Aug 6, 2026
- Priority: Urgent (Closes CVE-2026-8763, rated Critical)
- CVEs: 32, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2026:21538-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [bouncycastle](https://patchblox.com/security/data/product/linux/bouncycastle.md) | opensuse-leap 16.0 | 1.85-160000.1.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-8763](https://patchblox.com/security/data/cve/CVE-2026-8763.md) | Urgent | bouncycastle: In Bouncy Castle for Java before 1.85, Name Constraints bypass via trailing dot in rfc822Name and URI | 9.1 | 0.0043 |  |
| [CVE-2026-58062](https://patchblox.com/security/data/cve/CVE-2026-58062.md) | Urgent | bouncycastle: In Bouncy Castle for Java before 1.85, Stapled OCSP response accepted without binding to the checked certificate | 9.1 | 0.0036 |  |
| [CVE-2026-59650](https://patchblox.com/security/data/cve/CVE-2026-59650.md) | Urgent | bouncycastle: In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement exponentiates unvalidated peer value | 9.1 | 0.0034 |  |
| [CVE-2026-13586](https://patchblox.com/security/data/cve/CVE-2026-13586.md) | High | bouncycastle: This update for bouncycastle fixes the following issues:  - CVE-2026-8763: Name Constraints bypass via trailing dot i... | 7.5 | 0.0062 |  |
| [CVE-2026-58060](https://patchblox.com/security/data/cve/CVE-2026-58060.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, HSS public-key level count unbounded, enabling huge allocation on verify | 7.5 | 0.0062 |  |
| [CVE-2026-12852](https://patchblox.com/security/data/cve/CVE-2026-12852.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, MLS wire decoder allocates attacker-declared opaque length before bounds check. | 7.5 | 0.0049 |  |
| [CVE-2026-13506](https://patchblox.com/security/data/cve/CVE-2026-13506.md) | High | bouncycastle: This update for bouncycastle fixes the following issues:  - CVE-2026-8763: Name Constraints bypass via trailing dot i... | 7.5 | 0.0049 |  |
| [CVE-2026-14682](https://patchblox.com/security/data/cve/CVE-2026-14682.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, Possible OOM from unbounded up-front allocation on a definite-length read | 7.5 | 0.0049 |  |
| [CVE-2026-58059](https://patchblox.com/security/data/cve/CVE-2026-58059.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, Quadratic-time escaping when stringifying X.500 distinguished names | 7.5 | 0.0049 |  |
| [CVE-2026-59644](https://patchblox.com/security/data/cve/CVE-2026-59644.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, MLS hash-ratchet honours arbitrary 32-bit generation counter from sender. | 7.5 | 0.0049 |  |
| [CVE-2026-59649](https://patchblox.com/security/data/cve/CVE-2026-59649.md) | High | eap8-activemq-artemis: In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory | 7.5 | 0.0049 |  |
| [CVE-2026-59646](https://patchblox.com/security/data/cve/CVE-2026-59646.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, DTLS handshake reassembler allocates buffer from unchecked 24-bit length | 7.5 | 0.0047 |  |
| [CVE-2026-59645](https://patchblox.com/security/data/cve/CVE-2026-59645.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, OER parser recurses without depth limit on self-referential IEEE 1609.2 schema | 7.5 | 0.0041 |  |
| [CVE-2026-15055](https://patchblox.com/security/data/cve/CVE-2026-15055.md) | High | bouncycastle: This update for bouncycastle fixes the following issues:  - CVE-2026-8763: Name Constraints bypass via trailing dot i... | 8.2 | 0.0034 |  |
| [CVE-2026-59642](https://patchblox.com/security/data/cve/CVE-2026-59642.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, CMS AuthenticatedData content not bound to MAC when authAttrs present | 7.5 | 0.0030 |  |
| [CVE-2026-12185](https://patchblox.com/security/data/cve/CVE-2026-12185.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, BKS/UBER keystore allocates from untrusted lengths before integrity check | 8.6 | 0.0029 |  |
| [CVE-2026-58061](https://patchblox.com/security/data/cve/CVE-2026-58061.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, CCM-family modes write plaintext to caller buffer before tag check | 7.5 | 0.0028 |  |
| [CVE-2026-59639](https://patchblox.com/security/data/cve/CVE-2026-59639.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers | 7.5 | 0.0024 |  |
| [CVE-2026-59643](https://patchblox.com/security/data/cve/CVE-2026-59643.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, OpenPGP inline-signature policy failures silently ignored | 7.5 | 0.0024 |  |
| [CVE-2026-12803](https://patchblox.com/security/data/cve/CVE-2026-12803.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD f... | 7.5 | 0.0024 |  |
| [CVE-2026-59651](https://patchblox.com/security/data/cve/CVE-2026-59651.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, BKS keystore accepts legacy version with 16-bit integrity MAC key | 7.5 | 0.0020 |  |
| [CVE-2026-12802](https://patchblox.com/security/data/cve/CVE-2026-12802.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, CMS AuthEnvelopedData fails to enforce tag-length on decryption | 7.5 | 0.0020 |  |
| [CVE-2026-12816](https://patchblox.com/security/data/cve/CVE-2026-12816.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, IESEngine stream-mode MAC forgery via length-dependent KDF split | 7.5 | 0.0018 |  |
| [CVE-2026-12817](https://patchblox.com/security/data/cve/CVE-2026-12817.md) | High | bouncycastle: In Bouncy Castle for Java before 1.85, OpenPGP AEAD decryption skips final tag on chunk-aligned data | 8.6 | 0.0017 |  |
| [CVE-2026-58063](https://patchblox.com/security/data/cve/CVE-2026-58063.md) | Routine | bouncycastle: In Bouncy Castle for Java before 1.85, BCFKS keystore load honours unbounded KDF cost from untrusted file | 5.3 | 0.0042 |  |
| [CVE-2026-59647](https://patchblox.com/security/data/cve/CVE-2026-59647.md) | Routine | bouncycastle: In Bouncy Castle for Java before 1.85, CRMF/CMP password-MAC honours unbounded iteration count | 5.3 | 0.0042 |  |
| [CVE-2026-59648](https://patchblox.com/security/data/cve/CVE-2026-59648.md) | Routine | bouncycastle: In Bouncy Castle for Java before 1.85, OpenPGP Argon2 S2K honours attacker-chosen memory and passes | 5.3 | 0.0042 |  |
| [CVE-2026-59640](https://patchblox.com/security/data/cve/CVE-2026-59640.md) | Routine | bouncycastle: In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths | 5.3 | 0.0035 |  |
| [CVE-2026-59638](https://patchblox.com/security/data/cve/CVE-2026-59638.md) | Routine | bouncycastle: In Bouncy Castle for Java before 1.85, JSSE hostname verifier CN-fallback enabled by default despite documented opt-in | 6.5 | 0.0035 |  |
| [CVE-2026-59652](https://patchblox.com/security/data/cve/CVE-2026-59652.md) | Routine | bouncycastle: In Bouncy Castle for Java before 1.85, LDAP filter injection in legacy jdk1.4 LDAPStoreHelper. | 6.5 | 0.0030 |  |
| [CVE-2026-59641](https://patchblox.com/security/data/cve/CVE-2026-59641.md) | Routine | bouncycastle: In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation | 5.3 | 0.0018 |  |
| [CVE-2026-12860](https://patchblox.com/security/data/cve/CVE-2026-12860.md) | Routine | bouncycastle: In Bouncy Castle for Java before 1.85, RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path | 5.3 | 0.0017 |  |

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Data as of 2026-11-10T20:03:11Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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