What is the CVSS score of CVE-2025-14840?

CVE-2025-14840 has a contested CVSS base score of 7.5 from a third party (e.g. CISA-ADP), while the vendor rates it High. vuln.today uses the vendor rating as authoritative.

How to fix or mitigate CVE-2025-14840?

Within 24 hours: Inventory all systems running Http Client Manager versions up to 9.3.13 and assess whether they are internet-facing or process untrusted input. Within 7 days: Implement network segmentation to restrict access to affected components and enable enhanced logging/monitoring for suspicious activity. Within 30 days: Contact the vendor for patch availability; establish a deployment plan to upgrade to patched versions once released, or pursue permanent decommissioning of the affected component.

Http Client Manager CVE-2025-14840

HIGH

Improper Check for Unusual or Exceptional Conditions (CWE-754)

2026-01-28 mlhess@drupal.org

Drupal Red Hat Http Client Manager

High

Disputed · 7.5 NVD

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Vulnerability Assessment

Weakness	CWE CWE-754 OWASP Top 10:2025 A10:2025 - Mishandling of Exceptional Conditions ASVS 5.0 V16 - Security Logging and Error Handling Unusual condition handling
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Http Client Manager versions up to 9.3.13 is affected by improper check for unusual or exceptional conditions (CVSS 7.5).

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affected Packages

composer drupal/http_client_manager fix: 9.3.13, 10.0.2, 11.0.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in composer

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability (CWE-754: Improper Check for Unusual or Exceptional Conditions) affects Http Client Manager. Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal HTTP Client Manager allows Forceful Browsing.This issue affects HTTP Client Manager: from 0.0.0 before 9.3.13, from 10.0.0 before 10.0.2, from 11.0.0 before 11.0.1.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Sources disagree (Low–High)

NVD PRIMARY 7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Red Hat 2.2 LOW

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

CVE Published

Jan 28, 2026 - 20:16 nvd

HIGH 7.5

DescriptionCVE.org

Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal HTTP Client Manager allows Forceful Browsing.This issue affects HTTP Client Manager: from 0.0.0 before 9.3.13, from 10.0.0 before 10.0.2, from 11.0.0 before 11.0.1.

Executive ViewAI

Why It Matters

Http Client Manager versions 9.3.13 and earlier contain a vulnerability that could allow attackers to exploit improper error handling, potentially leading to unauthorized access or system compromise. Organizations using this component in production environments face risk exposure until patching or mitigation is implemented.

Business Impact: High

Compensating Controls

Implement Web Application Firewall (WAF) rules to detect and block unusual request patterns targeting Http Client Manager endpoints. Apply network segmentation to limit exposure of affected systems to trusted networks only. Disable or restrict Http Client Manager features that are not essential to business operations. Increase monitoring and alerting for error conditions and exception handling failures in logs. Consider isolating affected systems until patches become available.

Threat Intelligence Overview

EPSS Score

0.1%

Top 81% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS Vendor

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.