SB2026030652 - Fedora 42 update for python3.10
Published: March 6, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Inefficient algorithmic complexity (CVE-ID: CVE-2025-12084)
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to usage of a quadratic algorithm when building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache(). A remote attacker can force the application to create excessively nested documents, leading to a denial of service condition.
2) Resource exhaustion (CVE-ID: CVE-2025-13836)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when reading HTTP responses in Lib/http/client.py. A remote attacker can trigger memory exhaustion and perform a denial of service (DoS) attack.
3) Input validation error (CVE-ID: CVE-2025-11468)
The vulnerability allows a remote attacker to perform a spoofing attack.
The vulnerability exists due to insufficient validation of user-supplied input in Lib/email/_header_value_parser.py. A remote attacker can manipulate email headers and perform spoofing attack.
4) CRLF injection (CVE-ID: CVE-2026-0672)
The vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data when using http.cookies.Morsel. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior leading to a spoofing attack.
5) CRLF injection (CVE-ID: CVE-2025-15282)
The vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data in urllib.request.DataHandler. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior.
Remediation
Install update from vendor's website.