Out-of-bounds read in Babelfish for PostgreSQL TDS RPC parser
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Babelfish for PostgreSQL extension versions 1.0 through 1.5, 2.1 through 2.15, 3.1 through 3.12, 4.0 through 4.8 and 5.1 through 5.4, and Amazon Aurora PostgreSQL with Babelfish before the fixed releases, contain an out-of-bounds read in the TDS RPC procedure-name parser (CWE-125). A remote authenticated user can read adjacent process memory or cause a denial of service by sending a malformed TDS RPC request to the TDS port.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
An out-of-bounds read in the TDS RPC procedure-name parser in the Babelfish for PostgreSQL extension versions 1.0-1.5, 2.1-2.15, 3.1-3.12, 4.0-4.8, 5.1-5.4 and in Amazon Aurora PostgreSQL with Babelfish might allow remote authenticated users to read adjacent process memory or cause a denial of service via a malformed TDS RPC request to the TDS port (default 1433). To remediate this issue, we recommend users upgrade to Babelfish for PostgreSQL extension versions 4.10, 5.6, 6.1 or later. As a workaround, restrict network access to the TDS port (default 1433). Customers using Amazon Aurora PostgreSQL with Babelfish should upgrade their cluster to Aurora PostgreSQL 13.9.16 (1.5.5), 13.23.3 (1.17.2), 14.6.16 (2.3.5), 14.17.8 (2.12.4), 14.18.6 (2.13.3), 14.19.5 (2.14.2), 14.20.5 (2.15.2), 14.22.3 (2.16.1), 14.23.1 (2.17.0), 15.10.8 (3.8.4), 15.12.8 (3.9.4), 15.13.6 (3.10.3), 15.14.5 (3.11.2), 15.15.5 (3.12.2), 15.17.3 (3.13.1), 15.18.1 (3.14.0), 16.8.8 (4.5.5), 16.9.6 (4.6.3), 16.10.5 (4.7.2), 16.11.5 (4.8.2), 16.13.3 (4.9.1), 16.14.1 (4.10.0), 17.4.8 (5.1.4), 17.5.6 (5.2.3), 17.6.5 (5.3.2), 17.7.5 (5.4.2), 17.9.3 (5.5.1), 17.10.1 (5.6.0), 18.3.4 (6.0.2), 18.4.1 (6.1.0) or later, and apply any pending maintenance to ensure they are on the latest patch.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AWS | babelfish-for-postgresql | 1.0 – 1.5; 2.1 – 2.15; 3.1 – 3.12; 4.0 – 4.8; 5.1 – 5.4 | — | No fix listed | CNA |
| AWS | Amazon Aurora PostgreSQL with Babelfish | 1.0.0 to before 1.5.5; 1.6.0 to before 1.17.2; 2.0.0 to before 2.3.5; 2.4.0 to before 2.12.4; 2.13.0 to before 2.13.3; 2.14.0 to before 2.14.2; 2.15.0 to before 2.15.2; 2.16.0 to before 2.16.1; 3.0.0 to before 3.8.4; 3.9.0 to before 3.9.4; 3.10.0 to before 3.10.3; 3.11.0 to before 3.11.2; 3.12.0 to before 3.12.2; 3.13.0 to before 3.13.1; 4.0.0 to before 4.5.5; 4.6.0 to before 4.6.3; 4.7.0 to before 4.7.2; 4.8.0 to before 4.8.2; 4.9.0 to before 4.9.1; 5.0.0 to before 5.1.4; 5.2.0 to before 5.2.3; 5.3.0 to before 5.3.2; 5.4.0 to before 5.4.2; 5.5.0; 6.0.0 to before 6.0.2 | 1.5.5, 1.17.2, 2.3.5, 2.12.4, 2.13.3, 2.14.2, 2.15.2, 2.16.1, 3.8.4, 3.9.4, 3.10.3, 3.11.2, 3.12.2, 3.13.1, 4.5.5, 4.6.3, 4.7.2, 4.8.2, 4.9.1, 5.1.4, 5.2.3, 5.3.2, 5.4.2, 6.0.2 | Patch available | CNA |
- babelfish-for-postgresql VendorAWS Affected 1.0 – 1.5; 2.1 – 2.15; 3.1 – 3.12; 4.0 – 4.8; 5.1 – 5.4 Fixed in — No fix listed CNA
- Amazon Aurora PostgreSQL with Babelfish VendorAWS Affected 1.0.0 to before 1.5.5; 1.6.0 to before 1.17.2; 2.0.0 to before 2.3.5; 2.4.0 to before 2.12.4; 2.13.0 to before 2.13.3; 2.14.0 to before 2.14.2; 2.15.0 to before 2.15.2; 2.16.0 to before 2.16.1; 3.0.0 to before 3.8.4; 3.9.0 to before 3.9.4; 3.10.0 to before 3.10.3; 3.11.0 to before 3.11.2; 3.12.0 to before 3.12.2; 3.13.0 to before 3.13.1; 4.0.0 to before 4.5.5; 4.6.0 to before 4.6.3; 4.7.0 to before 4.7.2; 4.8.0 to before 4.8.2; 4.9.0 to before 4.9.1; 5.0.0 to before 5.1.4; 5.2.0 to before 5.2.3; 5.3.0 to before 5.3.2; 5.4.0 to before 5.4.2; 5.5.0; 6.0.0 to before 6.0.2 Fixed in 1.5.5, 1.17.2, 2.3.5, 2.12.4, 2.13.3, 2.14.2, 2.15.2, 2.16.1, 3.8.4, 3.9.4, 3.10.3, 3.11.2, 3.12.2, 3.13.1, 4.5.5, 4.6.3, 4.7.2, 4.8.2, 4.9.1, 5.1.4, 5.2.3, 5.3.2, 5.4.2, 6.0.2 Patch available CNA
Remediation
Upgrade the Babelfish for PostgreSQL extension to version 4.10, 5.6, 6.1 or later. Upgrade Amazon Aurora PostgreSQL with Babelfish to Babelfish versions 1.5.5, 1.17.2, 2.3.5, 2.12.4, 2.13.3, 2.14.2, 2.15.2, 2.16.1, 3.8.4, 3.9.4, 3.10.3, 3.11.2, 3.12.2, 3.13.1, 4.5.5, 4.6.3, 4.7.2, 4.8.2, 4.9.1, 5.1.4, 5.2.3, 5.3.2, 5.4.2, 6.0.2 or later. As a workaround, restrict network access to the TDS port (default 1433).
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Amazon Aurora PostgreSQL with Babelfish (Amazon) Fixed in 1.5.5, 1.17.2, 2.3.5, 2.12.4, 2.13.3, 2.14.2, 2.15.2, 2.16.1, 3.8.4, 3.9.4, 3.10.3, 3.11.2, 3.12.2, 3.13.1, 4.5.5, 4.6.3, 4.7.2, 4.8.2, 4.9.1, 5.1.4, 5.2.3, 5.3.2, 5.4.2, 6.0.2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
AWS Amazon Aurora PostgreSQL with Babelfish, babelfish-for-postgresql — aws.amazon.com/security/security-bulletins/2026-166-aws
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-86067 Heap buffer overflow in Babelfish for PostgreSQL TDS prelogin parserPriority MEDIUM 49
Timeline
- 2026-11-06 Threatist record created from CVE-2026-119924
- 2026-11-06 Alias added: GHSA-x57w-5w86-j4vx
- 2026-11-07 1 new reference · CNA
- 2026-11-07 CISA SSVC decision points changed
- 2026-11-07 Priority changed: MEDIUM → LOW
References
Patch 3
- https://github.com/babelfish-for-postgresql/babelfish-for-postgresql/releases/tag/BABEL_4_10_0__PG_16_14
- https://github.com/babelfish-for-postgresql/babelfish-for-postgresql/releases/tag/BABEL_5_6_0__PG_17_10
- https://github.com/babelfish-for-postgresql/babelfish-for-postgresql/releases/tag/BABEL_6_1_0__PG_18_4
More AWS vulnerabilities
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- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2024-18648 Amazon AWS Amplify CLI before 12.10.1 incorrectly configures the role trust policy of IAM… CVSS 3.1CRITICAL 9.8
- TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
- TI-2025-03847 Input validation issue in AWS Amplify Studio UI component properties CVSS 4.0CRITICAL 9.0
- TI-2026-11603 HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF CVSS 4.0HIGH 7.9
Sources
- CVE-2026-119924 · CVE Program
- CVE-2026-119924 · NVD
- FIRST EPSS
- GHSA-x57w-5w86-j4vx · GitHub Advisory Database · CC BY 4.0
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