// For flags

CVE-2025-27820

Apache HttpComponents: PSL (Public Suffix List) validation bypass

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A bug in PSL validation logic in Apache HttpClient 5.4.x disables domain checks, affecting cookie management and host name verification. Discovered by the Apache HttpClient team. Fixed in the 5.4.3 release

Un error en la lógica de validación de PSL en Apache HttpClient 5.4.x deshabilita las comprobaciones de dominio, lo que afecta la gestión de cookies y la verificación del nombre de host. Descubierto por el equipo de Apache HttpClient. Corregido en la versión 5.4.3.

*Credits: Joe Gallo
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-03-07 CVE Reserved
  • 2025-04-24 CVE Published
  • 2025-05-26 EPSS Updated
  • 2025-06-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-295: Improper Certificate Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apache Software Foundation
Search vendor "Apache Software Foundation"
 Apache HttpComponents
Search vendor "Apache Software Foundation" for product "Apache HttpComponents"
 >= 5.4.0 < 5.4.3
Search vendor "Apache Software Foundation" for product "Apache HttpComponents" and version " >= 5.4.0 < 5.4.3"
en
Affected