PSF-2026-5
NoneCVSS
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EPSS
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Published
Jan 20, 2026
CISA due date
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The record
When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Bitnami | libpython | 0 | 3.15.0 |
| Bitnami | python | 0 | 3.15.0 |
| Bitnami | python-min | 0 | 3.15.0 |
Related vulnerabilities
- CVE-2026-0672 When using http.cookies.Morsel, user-controlled cookie values and parameters can allow… Same vulnerability
- CVE-2026-1299 The email module, specifically the "BytesGenerator" class, didn’t properly quote newlines… Also affects libpython
- PSF-2026-8 The email module, specifically the "BytesGenerator" class, didn’t properly quote newlines… Also affects libpython
- CVE-2025-12781 When passing data to the b64decode(), standard_b64decode(), and urlsafe_b64decode()… Also affects libpython
- PSF-2026-7 When passing data to the b64decode(), standard_b64decode(), and urlsafe_b64decode()… Also affects libpython
- CVE-2026-0865 User-controlled header names and values containing newlines can allow injecting HTTP… Also affects libpython
- CVE-2025-15367 The poplib module, when passed a user-controlled command, can have additional commands… Also affects libpython
- CVE-2025-15366 The imaplib module, when passed a user-controlled command, can have additional commands… Also affects libpython