Summary
[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-168130, RHEL-167892
[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
Related: RHEL-168130, RHEL-167892
Fixed packages 8
| Release | Package | Fixed in |
|---|---|---|
| Oracle Linux · 8 | python3.12 | 0:3.12.13-2.el8_10 |
| Oracle Linux · 8 | python3.12-debug | 0:3.12.13-2.el8_10 |
| Oracle Linux · 8 | python3.12-devel | 0:3.12.13-2.el8_10 |
| Oracle Linux · 8 | python3.12-idle | 0:3.12.13-2.el8_10 |
| Oracle Linux · 8 | python3.12-libs | 0:3.12.13-2.el8_10 |
| Oracle Linux · 8 | python3.12-rpm-macros | 0:3.12.13-2.el8_10 |
| Oracle Linux · 8 | python3.12-test | 0:3.12.13-2.el8_10 |
| Oracle Linux · 8 | python3.12-tkinter | 0:3.12.13-2.el8_10 |
Vulnerabilities 11
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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
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.