Windows apps · Application version · February 3, 2026
Python 3.13 3.13.12
Python 3.13 3.13.12, released February 3, 2026, fixes 5 CVEs in Python 3.13. None of them is reported as exploited. Patch Radar priority: High. The latest Python 3.13 is 3.13.17, which also fixes every one of these CVEs.
High
Superseded. The latest Python 3.13 is 3.13.17, which also fixes every CVE on this page. Install that instead.
CVEs closed
5
None rated Critical
Exploited
0
None reported
Highest CVSS
8.1
Base score, 0 to 10
Highest EPSS
0.0062
49th percentile
Priority of the 5 CVEs
Patch now 0
Urgent 0
High 4
Routine 1
Applies to
| Product | Version |
|---|---|
| Python 3.13 | 3.13.12 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-1299 | email BytesGenerator header injection due to unquoted newlines | 7.1 | 0.0057 | None reported |
| High | CVE-2026-0865 | wsgiref.headers.Headers allows header newline injection | 8.1 | 0.0055 | None reported |
| High | CVE-2025-15282 | Header injection via newlines in data URL mediatype | 8.1 | 0.0054 | None reported |
| High | CVE-2026-0672 | Header injection in http.cookies.Morsel | 8.1 | 0.0048 | None reported |
| Routine | CVE-2025-11468 | Folding email comments of unfoldable characters doesn't preserve parenthesis | 5.7 | 0.0062 | None reported |
Showing 1 to 5 of 5
1
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.