7.0
High
CVE-2026-4786 Mitgation of CVE-2026-4519 was incomplete
Description
Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open()" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| CPython 3.15 | 3.15.0a1 → < 3.15.0b1 | 3.15.0b1 |
| CPython 3.14 | 3.14.0a1 → < 3.14.5rc1 | 3.14.5rc1 |
| CPython 3.13 | 3.13.0 → < 3.13.14 | 3.13.14 |
| CPython 3.12 | 3.12.0 → < 3.12.14 | 3.12.14 |
| CPython 3.11 | 3.11.0 → < 3.11.16 | 3.11.16 |
| CPython 3.10 | earliest → < 3.10.21 | 3.10.21 |
| Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION) | Versions not published | |
| Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION) | Versions not published | |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Versions not published |
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References
- github.com github.com
- github.com github.com
- mail.python.org mail.python.org
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
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