SB2026021078 - Red Hat Enterprise Linux 8 update for pcs
Published: February 10, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Excessive Iteration (CVE-ID: CVE-2025-67725)
CWE-ID: CWE-834 - Excessive Iteration
CVSSv4: 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:U/U:Clear
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to excessive iteration within the HTTPHeaders.add() method. A remote attacker can send a specially crafted HTTP request and perform a denial of service attack
2) Excessive Iteration (CVE-ID: CVE-2025-67726)
CWE-ID: CWE-834 - Excessive Iteration
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to excessive iteration within the _parseparam() function in httputil.py when parsing specific HTTP header values. A remote attacker can send a specially crafted HTTP request and perform a denial of service attack
3) Prototype pollution (CVE-ID: CVE-2025-13465)
CWE-ID: CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes (\'Prototype Pollution\')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to alter application's behavior.
The vulnerability exists due to improper input validation within the in the _.unset and _.omit functions. A remote attacker can pass specially crafted input to the application and delete methods from global prototypes.
Remediation
Install update from vendor's website.