CVE-2026-0865

Missing newline filtering has been discovered in Python. User-controlled header names and values containing newlines can allow injecting HTTP headers. Mitigation Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria...

CVE-2025-11468

Missing character filtering has been discovered in Python. When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not...

EUVD-2025-206306

When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not sanitized...

AZL-75053 CVE-2026-0865 affecting package python3 for versions less than 3.9.19-19

User-controlled header names and values containing newlines can allow injecting HTTP headers...

AZL-84284 CVE-2025-15366 affecting package docbook5-style-xsl 1.79.2-11

The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters...

UBUNTU-CVE-2026-0865

User-controlled header names and values containing newlines can allow injecting HTTP headers...

CVE-2026-0865

User-controlled header names and values containing newlines can allow injecting HTTP headers...

UBUNTU-CVE-2025-11468

When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not sanitized...

CVE-2025-11468

When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not sanitized...

CVE-2026-0672

CVE-2026-0672 concerns Python’s handling of cookie/header parsing (notably http.cookies.Morsel) where user-controlled cookie values and parameters could inject HTTP headers. Connected advisories confirm related fixes across Python builds and distributions (Ubuntu USN-8018-1; Debian DLA-4455; Chai...

CVE-2025-15367

The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters...

CVE-2025-15367 POP3 command injection in user-controlled commands

The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters...

CVE-2025-15367 POP3 command injection in user-controlled commands

The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters...

CVE-2025-15366

CVE-2025-15366 affects Python’s imaplib module, where a user-controlled command can be extended with additional commands via newline characters, enabling command injection in IMAP handling. Multiple Nessus advisories corroborate this CVE among Python-related issues, with remediation described as ...

CVE-2026-0865 wsgiref.headers.Headers allows header newline injection

User-controlled header names and values containing newlines can allow injecting HTTP headers...

CVE-2026-0865

User-controlled header names and values containing newlines can allow injecting HTTP headers...

CVE-2026-0865 wsgiref.headers.Headers allows header newline injection

User-controlled header names and values containing newlines can allow injecting HTTP headers...

PSF-2026-6

User-controlled header names and values containing newlines can allow injecting HTTP headers...

CVE-2025-11468 Folding email comments of unfoldable characters doesn't preserve parenthesis

When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not sanitized...

CVE-2025-11468

CVE-2025-11468 refers to a Python vulnerability where folding a long comment in an email header that contains exclusively unfoldable characters can cause the parenthesis to be lost, enabling header injection when the addresses are user-controlled. The issue is tied to Python’s email/header handli...