All errata/sisyphus/ALT-PU-2025-16779-4
ALT-PU-2025-16779-4

Package update python3.14 in branch sisyphus

Version3.14.2-alt1
Task#402069
Published2026-04-15
Max severityHIGH
Severity:

Closed issues (10)

BDU:2026-01344
MEDIUM5.3

Уязвимость функций appendChild() и _clear_id_cache() интерпретатора языка программирования Python (CPython), позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-02-06Modified: 2026-04-20
CVSS 3.xMEDIUM 5.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P
References
BDU:2026-05126
MEDIUM5.5

Уязвимость модуля plistlib интерпретатора языка программирования Python, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-04-14Modified: 2026-04-27
CVSS 3.xMEDIUM 5.5
CVSS:3.x/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0MEDIUM 4.9
CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:N/A:C
References
BDU:2026-05127
HIGH7.5

Уязвимость компонента Content-Length интерпретатора языка программирования Python, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-04-14Modified: 2026-04-27
CVSS 3.xHIGH 7.5
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0HIGH 7.8
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C
References
BDU:2026-05129
MEDIUM5.5

Уязвимость функции os.path.expandvars() интерпретатора языка программирования Python, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-04-14Modified: 2026-04-20
CVSS 3.xMEDIUM 5.5
CVSS:3.x/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0MEDIUM 4.6
CVSS:2.0/AV:L/AC:L/Au:S/C:N/I:N/A:C
References
BDU:2026-05132
MEDIUM5.3

Уязвимость модуля base64 интерпретатора языка программирования Python, позволяющая нарушителю выполнить произвольный код

Published: 2026-04-14Modified: 2026-04-20
CVSS 3.xMEDIUM 5.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:P/A:N
References
CVE-2025-12084
MEDIUM6.3

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.

Published: 2025-12-03Modified: 2026-01-26
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 4.0MEDIUM 6.3
CVSS:4.0/CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
CVE-2025-12781
MEDIUM6.3

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 establish an "alternative base64 alphabet" such as the URL safe alphabet. This behavior matches what is recommended in earlier base64 RFCs, but newer RFCs now recommend either dropping characters outside the specified base64 alphabet or raising an error. The old behavior has the possibility of causing data integrity issues. This behavior can only be insecure if your application uses an alternate base64 alphabet (without "+/"). If your application does not use the "altchars" parameter or the urlsafe_b64decode() function, then your application does not use an alternative base64 alphabet. The attached patches DOES NOT make the base64-decode behavior raise an error, as this would be a change in behavior and break existing programs. Instead, the patch deprecates the behavior which will be replaced with the newly recommended behavior in a future version of Python. Users are recommended to mitigate by verifying user-controlled inputs match the base64 alphabet they are expecting or verify that their application would not be affected if the b64decode() functions accepted "+" or "/" outside of altchars.

Published: 2026-01-21Modified: 2026-02-02
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 4.0MEDIUM 6.3
CVSS:4.0/CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
CVE-2025-13836
MEDIUM6.3

When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.

Published: 2025-12-01Modified: 2026-02-10
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0MEDIUM 6.3
CVSS:4.0/CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
CVE-2025-13837
LOW2.1

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

Published: 2025-12-01Modified: 2026-03-03
CVSS 3.xMEDIUM 5.5
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 4.0LOW 2.1
CVSS:4.0/CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
CVE-2025-6075
LOW1.8

If the value passed to os.path.expandvars() is user-controlled a performance degradation is possible when expanding environment variables.

Published: 2025-10-31Modified: 2026-02-04
CVSS 3.xMEDIUM 5.5
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0LOW 1.8
CVSS:4.0/CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References