# ALAS2023-2026-2153: Security update for 7 packages

ALAS2023-2026-2153, released September 14, 2026, fixes 16 CVEs across 7 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/alas2023-2026-2153
- Platform: Linux
- Released: Sep 14, 2026
- Priority: Urgent (Closes CVE-2026-8763, rated Critical)
- CVEs: 16, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://alas.aws.amazon.com/AL2023/ALAS-2026-2153.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [bouncycastle](https://patchblox.com/security/data/product/linux/bouncycastle.md) | amzn 2023 | 1.70-4.amzn2023.0.8 |
| [bouncycastle-javadoc](https://patchblox.com/security/data/product/linux/bouncycastle-javadoc.md) | amzn 2023 | 1.70-4.amzn2023.0.8 |
| [bouncycastle-mail](https://patchblox.com/security/data/product/linux/bouncycastle-mail.md) | amzn 2023 | 1.70-4.amzn2023.0.8 |
| [bouncycastle-pg](https://patchblox.com/security/data/product/linux/bouncycastle-pg.md) | amzn 2023 | 1.70-4.amzn2023.0.8 |
| [bouncycastle-pkix](https://patchblox.com/security/data/product/linux/bouncycastle-pkix.md) | amzn 2023 | 1.70-4.amzn2023.0.8 |
| [bouncycastle-tls](https://patchblox.com/security/data/product/linux/bouncycastle-tls.md) | amzn 2023 | 1.70-4.amzn2023.0.8 |
| [bouncycastle-util](https://patchblox.com/security/data/product/linux/bouncycastle-util.md) | amzn 2023 | 1.70-4.amzn2023.0.8 |

## 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: Name Constraints bypass via trailing dot in rfc822Name and URI (bsc#1272700). | 9.1 | 0.0043 |  |
| [CVE-2026-58062](https://patchblox.com/security/data/cve/CVE-2026-58062.md) | Urgent | bouncycastle: Stapled OCSP response accepted without binding to the checked certificate (bsc#1272716). | 9.1 | 0.0036 |  |
| [CVE-2026-59650](https://patchblox.com/security/data/cve/CVE-2026-59650.md) | Urgent | bouncycastle: MTI/A0 DH agreement exponentiates unvalidated peer value (bsc#1272730). | 9.1 | 0.0034 |  |
| [CVE-2026-58060](https://patchblox.com/security/data/cve/CVE-2026-58060.md) | High | bouncycastle: HSS public-key level count unbounded, enabling huge allocation on verify (bsc#1272714). | 7.5 | 0.0062 |  |
| [CVE-2026-13506](https://patchblox.com/security/data/cve/CVE-2026-13506.md) | High | bouncycastle: Lazy ASN.1 sequence forcing resets nesting-depth guard (bsc#1272709). | 7.5 | 0.0049 |  |
| [CVE-2026-14682](https://patchblox.com/security/data/cve/CVE-2026-14682.md) | High | bouncycastle: Possible OOM from unbounded up-front allocation on a definite-length read (bsc#1272711). | 7.5 | 0.0049 |  |
| [CVE-2026-58059](https://patchblox.com/security/data/cve/CVE-2026-58059.md) | High | bouncycastle: Quadratic-time escaping when stringifying X.500 distinguished names (bsc#1272713). | 7.5 | 0.0049 |  |
| [CVE-2026-59649](https://patchblox.com/security/data/cve/CVE-2026-59649.md) | High | bouncycastle: OpenPGP user-attribute subpacket length bounded only by JVM max memory (bsc#1272729). | 7.5 | 0.0049 |  |
| [CVE-2026-59646](https://patchblox.com/security/data/cve/CVE-2026-59646.md) | High | bouncycastle: DTLS handshake reassembler allocates buffer from unchecked 24-bit length (bsc#1272726). | 7.5 | 0.0047 |  |
| [CVE-2026-59645](https://patchblox.com/security/data/cve/CVE-2026-59645.md) | High | bouncycastle: OER parser recurses without depth limit on self-referential IEEE 1609.2 schema (bsc#1272725). | 7.5 | 0.0041 |  |
| [CVE-2026-59642](https://patchblox.com/security/data/cve/CVE-2026-59642.md) | High | bouncycastle: CMS AuthenticatedData content not bound to MAC when authAttrs present (bsc#1272722). | 7.5 | 0.0030 |  |
| [CVE-2026-58061](https://patchblox.com/security/data/cve/CVE-2026-58061.md) | High | bouncycastle: CCM-family modes write plaintext to caller buffer before tag check (bsc#1272715). | 7.5 | 0.0028 |  |
| [CVE-2026-59639](https://patchblox.com/security/data/cve/CVE-2026-59639.md) | High | bouncycastle: CMS verifySignatures returns true for SignedData with zero signers (bsc#1272719). | 7.5 | 0.0024 |  |
| [CVE-2026-12803](https://patchblox.com/security/data/cve/CVE-2026-12803.md) | High | bouncycastle: KCCMBlockCipher MAC does not bind nonce when AAD is absent (bsc#1272703). | 7.5 | 0.0024 |  |
| [CVE-2026-59638](https://patchblox.com/security/data/cve/CVE-2026-59638.md) | Routine | bouncycastle: JSSE hostname verifier CN-fallback enabled by default despite documented opt-in (bsc#1272718). | 6.5 | 0.0035 |  |
| [CVE-2026-59641](https://patchblox.com/security/data/cve/CVE-2026-59641.md) | Routine | bouncycastle: S/MIME validator trusts signer-asserted signingTime for path validation (bsc#1272721). | 5.3 | 0.0018 |  |

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Data as of 2026-11-11T07:45:43Z 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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