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CVE-2026-15806

Medium priority
Needs evaluation

The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credentials against...

11 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Needs evaluation
python3.7 Not in release Not in release Not in release — Needs evaluation
python3.8 Not in release Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Not in release Needs evaluation —
python3.10 Not in release Not in release Needs evaluation — —
python3.11 Not in release Not in release Needs evaluation — —
python3.12 Not in release Needs evaluation Not in release — —
python3.14 Needs evaluation Not in release Not in release — —
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CVE-2026-17084

Medium priority
Needs evaluation

The "stringprep" module didn't process characters from RFC 3454 tables B.2 or B.3 correctly: the latest Unicode codepoint attributes were used instead of the specified Unicode 3.2.0. This behavior would cause mismatches when...

11 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Needs evaluation
python3.7 Not in release Not in release Not in release — Needs evaluation
python3.8 Not in release Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Not in release Needs evaluation —
python3.10 Not in release Not in release Needs evaluation — —
python3.11 Not in release Not in release Needs evaluation — —
python3.12 Not in release Needs evaluation Not in release — —
python3.14 Needs evaluation Not in release Not in release — —
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CVE-2026-18503

Medium priority
Needs evaluation

Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing and consume significant CPU when applications pass unbounded input to csv.Sniffer.sniff().

11 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Needs evaluation
python3.7 Not in release Not in release Not in release — Needs evaluation
python3.8 Not in release Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Not in release Needs evaluation —
python3.10 Not in release Not in release Needs evaluation — —
python3.11 Not in release Not in release Needs evaluation — —
python3.12 Not in release Needs evaluation Not in release — —
python3.14 Needs evaluation Not in release Not in release — —
Show all 11 packages Show less packages

CVE-2026-6879

Medium priority
Needs evaluation

`Element.findall()` and fully-consumed `Element.iterfind()` exhibit `O(n^2)` time complexity when using XPath index predicates (e.g. `[1]`, `[last()]`, `[last()-N]`) on XML documents with many same-tag siblings. `Element.find()`...

12 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pypy3 Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
python2.7 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Needs evaluation
python3.7 Not in release Not in release Not in release — Needs evaluation
python3.8 Not in release Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Not in release Needs evaluation —
python3.10 Not in release Not in release Needs evaluation — —
python3.11 Not in release Not in release Needs evaluation — —
python3.12 Not in release Needs evaluation Not in release — —
python3.14 Needs evaluation Not in release Not in release — —
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CVE-2026-15308

Medium priority
Fixed

The incremental HTML parser (html.parser.HTMLParser) allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data.

11 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Not in release Fixed Fixed Fixed
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Fixed
python3.7 Not in release Not in release Not in release — Fixed
python3.8 Not in release Not in release Not in release Fixed Fixed
python3.9 Not in release Not in release Not in release Fixed —
python3.10 Not in release Not in release Fixed — —
python3.11 Not in release Not in release Fixed — —
python3.12 Not in release Fixed Not in release — —
python3.14 Fixed Not in release Not in release — —
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CVE-2026-4360

Medium priority

Some fixes available 3 of 5

In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid...

12 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Not in release Not affected Not affected Not affected
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Not affected
python3.7 Not in release Not in release Not in release — Not affected
python3.8 Not in release Not in release Not in release Not affected Not affected
python3.9 Not in release Not in release Not in release Not affected —
python3.10 Not in release Not in release Fixed — —
python3.11 Not in release Not in release Not affected — —
python3.12 Not in release Fixed Not in release — —
python3.13 Not in release Not in release Not in release — —
python3.14 Fixed Not in release Not in release — —
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CVE-2026-11972

Medium priority
Needs evaluation

When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.

12 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Needs evaluation
python3.7 Not in release Not in release Not in release — Needs evaluation
python3.8 Not in release Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Not in release Needs evaluation —
python3.10 Not in release Not in release Needs evaluation — —
python3.11 Not in release Not in release Needs evaluation — —
python3.12 Not in release Needs evaluation Not in release — —
python3.13 Not in release Not in release Not in release — —
python3.14 Needs evaluation Not in release Not in release — —
Show all 12 packages Show less packages

CVE-2026-0864

Medium priority
Needs evaluation

When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls...

12 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python2.7 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Needs evaluation
python3.7 Not in release Not in release Not in release — Needs evaluation
python3.8 Not in release Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Not in release Needs evaluation —
python3.10 Not in release Not in release Needs evaluation — —
python3.11 Not in release Not in release Needs evaluation — —
python3.12 Not in release Needs evaluation Not in release — —
python3.13 Not in release Not in release Not in release — —
python3.14 Needs evaluation Not in release Not in release — —
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CVE-2026-11940

Medium priority
Needs evaluation

tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at...

13 affected packages

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

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
pypy3 Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
python2.7 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Needs evaluation
python3.7 Not in release Not in release Not in release — Needs evaluation
python3.8 Not in release Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Not in release Needs evaluation —
python3.10 Not in release Not in release Needs evaluation — —
python3.11 Not in release Not in release Needs evaluation — —
python3.12 Not in release Needs evaluation Not in release — —
python3.13 Not in release Not in release Not in release — —
python3.14 Needs evaluation Not in release Not in release — —
Show all 13 packages Show less packages

CVE-2026-9669

Medium priority

Some fixes available 3 of 19

bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid...

12 affected packages

python3.10, python3.12, python3.13, python3.14, python2.7...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python3.10 Not in release Not in release Fixed — —
python3.12 Not in release Fixed Not in release — —
python3.13 Not in release Not in release Not in release — —
python3.14 Fixed Not in release Not in release — —
python2.7 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
python3.11 Not in release Not in release Needs evaluation — —
python3.4 Not in release Not in release Not in release — —
python3.5 Not in release Not in release Not in release — —
python3.6 Not in release Not in release Not in release — Needs evaluation
python3.7 Not in release Not in release Not in release — Needs evaluation
python3.8 Not in release Not in release Not in release Needs evaluation Needs evaluation
python3.9 Not in release Not in release Not in release Needs evaluation —
Show all 12 packages Show less packages