Summary
[3.12.13-2.0.1]
- Remove upstream URL reference
[3.12.13-2]
- Security fixes for CVE-2026-1502, CVE-2026-4786, CVE-2026-6100, CVE-2026-2297, CVE-2026-3644, CVE-2026-4224
Resolves: RHEL-167886, RHEL-168120
[3.12.13-1]
- Update to 3.12.13
- Security fixes for CVE-2025-6075, CVE-2025-13837, CVE-2025-15282, CVE-2025-59375, CVE-2026-0672
- Require expat >= 2.7.2 to prevent symbol lookup errors at runtime with older expat
Related: RHEL-167886, RHEL-168120
[3.12.12-6]
- Security fix for CVE-2026-4519
Resolves: RHEL-158079
[3.12.12-5]
- Rebuilding previous fixes for different build target
Related: RHEL-143057, RHEL-143109, RHEL-144854
[3.12.12-4]
- Security fixes for CVE-2026-0865, CVE-2025-15366, CVE-2025-15367 and CVE-2026-1299
Resolves: RHEL-143057
Resolves: RHEL-143109
Resolves: RHEL-144854
Fixed packages 8
| Release | Package | Fixed in |
|---|---|---|
| Oracle Linux · 10 | python-unversioned-command | 0:3.12.13-2.0.1.el10_2 |
| Oracle Linux · 10 | python3 | 0:3.12.13-2.0.1.el10_2 |
| Oracle Linux · 10 | python3-debug | 0:3.12.13-2.0.1.el10_2 |
| Oracle Linux · 10 | python3-devel | 0:3.12.13-2.0.1.el10_2 |
| Oracle Linux · 10 | python3-idle | 0:3.12.13-2.0.1.el10_2 |
| Oracle Linux · 10 | python3-libs | 0:3.12.13-2.0.1.el10_2 |
| Oracle Linux · 10 | python3-test | 0:3.12.13-2.0.1.el10_2 |
| Oracle Linux · 10 | python3-tkinter | 0:3.12.13-2.0.1.el10_2 |
Vulnerabilities 12
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Critical 9.1
Use-after-free in lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile after re-use under memory pressure
Use-after-free (UAF) was possible in the `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile` when a memory allocation fails with a `MemoryError` and the decompression instance is re-used. This scenario can be triggered if the process is under …
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High 7.5
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that i…
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High 7.0
webbrowser.open() allows leading dashes in URLs
The webbrowser.open() API would accept leading dashes in the URL which could be handled as command line options for certain web browsers. New behavior rejects leading dashes. Users are recommended to sanitize URLs prior to passing to webbrowser.open().
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High 7.0
Incomplete mitigation of CVE-2026-4519, %action expansion for command injection to webbrowser.open()
Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open()" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.
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Medium 6.0
Header injection via newlines in data URL mediatype
User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.
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Medium 6.0
Header injection in http.cookies.Morsel
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.
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Medium 6.0
Incomplete control character validation in http.cookies
The fix for CVE-2026-0672, which rejected control characters in http.cookies.Morsel, was incomplete. The Morsel.update(), |= operator, and unpickling paths were not patched, allowing control characters to bypass input validation. Additionally, BaseCookie.js_o…
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Medium 6.0
Stack overflow parsing XML with deeply nested DTD content models
When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.
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Medium 5.7
HTTP client proxy tunnel headers not validated for CR/LF
CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.
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Medium 5.7
SourcelessFileLoader does not use io.open_code()
The import hook in CPython that handles legacy *.pyc files (SourcelessFileLoader) is incorrectly handled in FileLoader (a base class) and so does not use io.open_code() to read the .pyc files. sys.audit handlers for this audit event therefore do not fire.
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Low 2.1
Out-of-memory when loading Plist
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
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Low 1.8
Quadratic complexity in os.path.expandvars() with user-controlled template
If the value passed to os.path.expandvars() is user-controlled a performance degradation is possible when expanding environment variables.