CVE-2025-11468— Folding email comments of unfoldable characters doesn't preserve parenthesis
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I. Basic Information for CVE-2025-11468
Vulnerability Information
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Vulnerability Title
Folding email comments of unfoldable characters doesn't preserve parenthesis
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
CPython 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CPython是Python基金会的一个用C语言实现的Python解释器。 CPython存在安全漏洞，该漏洞源于折叠仅包含不可折叠字符的电子邮件标头中的长注释时未保留括号，可能导致在用户控制且未清理的地址中注入标头。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Python Software Foundation | CPython | 0 ~ 3.10.20 | - |
II. Public POCs for CVE-2025-11468
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|---|
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Same Patch Batch · Python Software Foundation · 2026-01-20 · 6 CVEs total
| CVE-2026-0865 | wsgiref.headers.Headers allows header newline injection | |
| CVE-2025-15367 | POP3 command injection in user-controlled commands | |
| CVE-2025-15366 | IMAP command injection in user-controlled commands | |
| CVE-2025-15282 | Header injection via newlines in data URL mediatype | |
| CVE-2026-0672 | Header injection in http.cookies.Morsel |
IV. Related Vulnerabilities
Same product: CPython
- CVE-2026-3087
shutil.unpack_archive() doesn't check for Windows absolute p - CVE-2026-6019
BaseCookie.js_output() does not neutralize embedded characte - CVE-2026-3298
Out-of-bounds write in Windows asyncio.ProacterEventLoop.soc - CVE-2026-5713
Out-of-bounds read/write during remote profiling and asyncio - CVE-2026-4786
Incomplete mitigation of CVE-2026-4519, %action expansion fo
Same vendor: Python Software Foundation
- CVE-2026-3087
shutil.unpack_archive() doesn't check for Windows absolute p - CVE-2026-6019
BaseCookie.js_output() does not neutralize embedded characte - CVE-2026-3298
Out-of-bounds write in Windows asyncio.ProacterEventLoop.soc - CVE-2026-5713
Out-of-bounds read/write during remote profiling and asyncio - CVE-2026-4786
Incomplete mitigation of CVE-2026-4519, %action expansion fo
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