vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2025-27820

Apache HttpComponents: PSL (Public Suffix List) validation bypass

HIGH
7.5
CVSS Score
Published: April 24, 2025 at 11:44 AM UTC
Updated: June 17, 2026 at 09:04 AM UTC
2 products affected across 2 vendorsOntap ToolsHttpclient

Using Apache HttpComponents by Apache Software Foundation?

Get instant alerts when new vulnerabilities affect Apache HttpComponents - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.5
Exploit prediction
EPSS 1.0%
SSVC
No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Httpclient· Apachemaven
95%
5.4 ≤ v < 5.4.35.4.0 ≤ v < 5.4.35.4.0
Affected range stops below 5.4.3, so it looks safe — our inference, not a vendor statement
Ontap Tools· NetApp
95%
10

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

PatchIssue Tracking
Source: [email protected]
https://github.com/apache/httpcomponents-client/pull/574
PatchIssue Tracking
Source: [email protected]
https://github.com/apache/httpcomponents-client/pull/621
Product
Source: [email protected]
https://hc.apache.org/httpcomponents-client-5.4.x/index.html
Vendor AdvisoryMailing ListPatch
Source: [email protected]
https://lists.apache.org/thread/55xhs40ncqv97qvoocok44995xp5kqn8
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://security.netapp.com/advisory/ntap-20250516-0003/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-295

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card