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CVE-2019-19274
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…
High7.5EPSS 3.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.)
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 3.3% · top 11% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPItyped-astGHSA-m3jw-62m7-jjcm (opens in a new tab)
References (6)
- https://github.com/python/typed_ast/commit/156afcb26c198e162504a57caddfe0acd9ed7dce (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/python/cpython/commit/dcfcd146f8e6fc5c2fc16a4c192a0c5f5ca8c53c (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/python/cpython/commit/a4d78362397fc3bced6ea80fbc7b5f4827aec55e (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/python/typed_ast/commit/dc317ac9cff859aa84eeabe03fb5004982545b3b (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.python.org/issue36495 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2020-9b3dabc21c (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-m3jw-62m7-jjcm (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-19274)Record last updated .