Linux · 
Amazon Linux · Security advisory · September 14, 2026
Amazon Linux · Security advisory · September 14, 2026ALAS2023-2026-2153: 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.
Urgent
CVEs closed
16
3 rated Critical
Exploited
0
None reported
Highest CVSS
9.1
Base score, 0 to 10
Highest EPSS
0.0062
49th percentile
Priority of the 16 CVEs
Patch now 0
Urgent 3
High 11
Routine 2
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| bouncycastle | amzn 2023 | 1.70-4.amzn2023.0.8 |
| bouncycastle-javadoc | amzn 2023 | 1.70-4.amzn2023.0.8 |
| bouncycastle-mail | amzn 2023 | 1.70-4.amzn2023.0.8 |
| bouncycastle-pg | amzn 2023 | 1.70-4.amzn2023.0.8 |
| bouncycastle-pkix | amzn 2023 | 1.70-4.amzn2023.0.8 |
| bouncycastle-tls | amzn 2023 | 1.70-4.amzn2023.0.8 |
| bouncycastle-util | amzn 2023 | 1.70-4.amzn2023.0.8 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2026-8763 | bouncycastle: Name Constraints bypass via trailing dot in rfc822Name and URI (bsc#1272700). | 9.1 | 0.0043 | None reported |
| Urgent | CVE-2026-58062 | bouncycastle: Stapled OCSP response accepted without binding to the checked certificate (bsc#1272716). | 9.1 | 0.0036 | None reported |
| Urgent | CVE-2026-59650 | bouncycastle: MTI/A0 DH agreement exponentiates unvalidated peer value (bsc#1272730). | 9.1 | 0.0034 | None reported |
| High | CVE-2026-58060 | bouncycastle: HSS public-key level count unbounded, enabling huge allocation on verify (bsc#1272714). | 7.5 | 0.0062 | None reported |
| High | CVE-2026-13506 | bouncycastle: Lazy ASN.1 sequence forcing resets nesting-depth guard (bsc#1272709). | 7.5 | 0.0049 | None reported |
| High | CVE-2026-14682 | bouncycastle: Possible OOM from unbounded up-front allocation on a definite-length read (bsc#1272711). | 7.5 | 0.0049 | None reported |
| High | CVE-2026-58059 | bouncycastle: Quadratic-time escaping when stringifying X.500 distinguished names (bsc#1272713). | 7.5 | 0.0049 | None reported |
| High | CVE-2026-59649 | bouncycastle: OpenPGP user-attribute subpacket length bounded only by JVM max memory (bsc#1272729). | 7.5 | 0.0049 | None reported |
| High | CVE-2026-59646 | bouncycastle: DTLS handshake reassembler allocates buffer from unchecked 24-bit length (bsc#1272726). | 7.5 | 0.0047 | None reported |
| High | CVE-2026-59645 | bouncycastle: OER parser recurses without depth limit on self-referential IEEE 1609.2 schema (bsc#1272725). | 7.5 | 0.0041 | None reported |
| High | CVE-2026-59642 | bouncycastle: CMS AuthenticatedData content not bound to MAC when authAttrs present (bsc#1272722). | 7.5 | 0.0030 | None reported |
| High | CVE-2026-58061 | bouncycastle: CCM-family modes write plaintext to caller buffer before tag check (bsc#1272715). | 7.5 | 0.0028 | None reported |
| High | CVE-2026-59639 | bouncycastle: CMS verifySignatures returns true for SignedData with zero signers (bsc#1272719). | 7.5 | 0.0024 | None reported |
| High | CVE-2026-12803 | bouncycastle: KCCMBlockCipher MAC does not bind nonce when AAD is absent (bsc#1272703). | 7.5 | 0.0024 | None reported |
| Routine | CVE-2026-59638 | bouncycastle: JSSE hostname verifier CN-fallback enabled by default despite documented opt-in (bsc#1272718). | 6.5 | 0.0035 | None reported |
| Routine | CVE-2026-59641 | bouncycastle: S/MIME validator trusts signer-asserted signingTime for path validation (bsc#1272721). | 5.3 | 0.0018 | None reported |
Showing 1 to 16 of 16
1
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.