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CVE-2026-1299

Medium priority
Needs evaluation

The email module, specifically the "BytesGenerator" class, didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized. This is only applicable if...

13 affected packages

pypy3, python2.7, python3.4, python3.5, python3.6...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pypy3 Needs evaluation Needs evaluation Needs evaluation
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
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CVE-2025-12781

Medium priority
Needs evaluation

When passing data to the b64decode(), standard_b64decode(), and urlsafe_b64decode() functions in the "base64" module the characters "+/" will always be accepted, regardless of the value of "altchars" parameter, typically used to...

13 affected packages

pypy3, python2.7, python3.4, python3.5, python3.6...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pypy3 Needs evaluation Needs evaluation Needs evaluation
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
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CVE-2026-0865

Medium priority
Needs evaluation

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

12 affected packages

python2.7, python3.4, python3.5, python3.6, python3.7...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
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CVE-2026-0672

Medium priority
Needs evaluation

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.

12 affected packages

python2.7, python3.4, python3.5, python3.6, python3.7...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
Show all 12 packages Show less packages

CVE-2025-15367

Medium priority
Needs evaluation

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

12 affected packages

python2.7, python3.4, python3.5, python3.6, python3.7...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
Show all 12 packages Show less packages

CVE-2025-15366

Medium priority
Needs evaluation

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

12 affected packages

python2.7, python3.4, python3.5, python3.6, python3.7...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
Show all 12 packages Show less packages

CVE-2025-15282

Medium priority
Needs evaluation

User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.

12 affected packages

python2.7, python3.4, python3.5, python3.6, python3.7...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
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CVE-2025-11468

Medium priority
Needs evaluation

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...

12 affected packages

python2.7, python3.4, python3.5, python3.6, python3.7...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
Show all 12 packages Show less packages

CVE-2025-12084

Medium priority
Needs evaluation

When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.

14 affected packages

jython, pypy3, python2.7, python3.4, python3.5...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jython Needs evaluation Needs evaluation Needs evaluation Needs evaluation
pypy3 Needs evaluation Needs evaluation Needs evaluation
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
Show all 14 packages Show less packages

CVE-2025-13837

Medium priority
Needs evaluation

When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues

12 affected packages

python2.7, python3.4, python3.5, python3.6, python3.7...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release
python3.5 Not in release Not in release
python3.6 Not in release Not in release Needs evaluation
python3.7 Not in release Not in release Needs evaluation
python3.8 Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Needs evaluation
python3.10 Not in release Needs evaluation
python3.11 Not in release Needs evaluation
python3.12 Needs evaluation Not in release
python3.13 Not in release Not in release
python3.14 Not in release Not in release
Show all 12 packages Show less packages