typed_ast 1.3.0 and 1.3.1 has a handle_keywordonly_args out-of-bounds read.
Priority LOW 39CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-125 and the CVSS impact.
Summary
typed_ast 1.3.0 and 1.3.1 has a handle_keywordonly_args out-of-bounds read. An attacker with the ability to cause a Python interpreter to parse Python source (but not necessarily execute it) may be able to crash the interpreter process. This could be a concern, for example, in a web-based service that parses (but does not execute) Python code. (This issue also affected certain Python 3.8.0-alpha prereleases.)
Why it matters now
EPSS 0.03283 88th percentileScored 2026-11-07
Fix Fixed typed-ast (PyPI): 1.3.2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | typed-ast (PyPI) | 1.3.0 to before 1.3.2 | 1.3.2 | Patch available | GHSA-m3jw-62m7-jjcm |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- typed-ast (PyPI) Vendor— Affected 1.3.0 to before 1.3.2 Fixed in 1.3.2 Patch available GHSA-m3jw-62m7-jjcm
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:python:typed_ast:1.3.0:*:*:*:*:*:*:* | 1.3.0 | Vulnerable | python-pillow |
| cpe:2.3:a:python:typed_ast:1.3.1:*:*:*:*:*:*:* | 1.3.1 | Vulnerable | python-pillow |
- cpe:2.3:a:python:typed_ast:1.3.0:*:*:*:*:*:*:* Versions 1.3.0 Vulnerable ·python-pillow
- cpe:2.3:a:python:typed_ast:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·python-pillow
Remediation
- Fix · GHSA-m3jw-62m7-jjcm typed-ast (PyPI) Fixed in 1.3.2 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2019-19274
- 2026-10-03 Alias added: GHSA-m3jw-62m7-jjcm
References
Patch 5
- https://github.com/python/typed_ast/commit/156afcb26c198e162504a57caddfe0acd9ed7dce
- https://github.com/python/cpython/commit/dcfcd146f8e6fc5c2fc16a4c192a0c5f5ca8c53c
- https://github.com/python/cpython/commit/a4d78362397fc3bced6ea80fbc7b5f4827aec55e
- https://github.com/python/typed_ast/commit/dc317ac9cff859aa84eeabe03fb5004982545b3b
- https://bugs.python.org/issue36495
Advisory 3
More python-pillow Typed Ast vulnerabilities
- TI-2019-13896 typed_ast 1.3.0 and 1.3.1 has an ast_for_arguments out-of-bounds read. CVSS 3.1HIGH 7.5
Sources
- CVE-2019-19274 · CVE Program
- CVE-2019-19274 · NVD
- FIRST EPSS
- GHSA-m3jw-62m7-jjcm · GitHub Advisory Database · CC BY 4.0
- CVE-2019-19274 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences