7.5
HIGH
CVE-2025-27820
Apache HttpClient Domain Check Bypass Vulnerability
Description

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

INFO

Published Date :

April 24, 2025, 12:15 p.m.

Last Modified :

July 16, 2025, 2:48 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2025-27820 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2025-27820 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apache httpclient
1 Netapp ontap_tools
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-27820.

URL Resource
https://github.com/apache/httpcomponents-client/pull/574 Issue Tracking Patch
https://github.com/apache/httpcomponents-client/pull/621 Issue Tracking Patch
https://hc.apache.org/httpcomponents-client-5.4.x/index.html Product
https://lists.apache.org/thread/55xhs40ncqv97qvoocok44995xp5kqn8 Mailing List Patch
https://security.netapp.com/advisory/ntap-20250516-0003/ Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
11notes/docker-unifi

Unifi Controller (DB included)

Dockerfile Shell

Updated: 2 days, 5 hours ago
19 stars 1 fork 1 watcher
Born at : March 11, 2018, 2:36 p.m. This repo has been linked 32 different CVEs too.
Profile Photo
phax/ph-web

Java library with common web stuff

http http-client mail email smtp port network servlet sitemap useragent user-agent web xservlet ph-web java-library java

CSS Java JavaScript

Updated: 6 days, 15 hours ago
4 stars 5 fork 5 watcher
Born at : Aug. 25, 2014, 6:12 a.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-27820 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-27820 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Jul. 16, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:apache:httpclient:*:*:*:*:*:*:*:* versions from (including) 5.4 up to (excluding) 5.4.3
    Added CPE Configuration OR *cpe:2.3:a:netapp:ontap_tools:10:*:*:*:*:vmware_vsphere:*:*
    Added Reference Type Apache Software Foundation: https://github.com/apache/httpcomponents-client/pull/574 Types: Issue Tracking, Patch
    Added Reference Type Apache Software Foundation: https://github.com/apache/httpcomponents-client/pull/621 Types: Issue Tracking, Patch
    Added Reference Type Apache Software Foundation: https://hc.apache.org/httpcomponents-client-5.4.x/index.html Types: Product
    Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/55xhs40ncqv97qvoocok44995xp5kqn8 Types: Mailing List, Patch
    Added Reference Type CVE: https://security.netapp.com/advisory/ntap-20250516-0003/ Types: Third Party Advisory
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    May. 16, 2025

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20250516-0003/
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Apr. 24, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Added CWE CWE-295
  • New CVE Received by [email protected]

    Apr. 24, 2025

    Action Type Old Value New Value
    Added Description 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
    Added Reference https://github.com/apache/httpcomponents-client/pull/574
    Added Reference https://github.com/apache/httpcomponents-client/pull/621
    Added Reference https://hc.apache.org/httpcomponents-client-5.4.x/index.html
    Added Reference https://lists.apache.org/thread/55xhs40ncqv97qvoocok44995xp5kqn8
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-27820 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-27820 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
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Latest DB Update: Jul. 17, 2025 10:49