CVE-2025-14840
Published: 28 January 2026
Summary
CVE-2025-14840 is a high-severity Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability in Bmeme Http Client Manager. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 19.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requires detection and response to audit logging failures as an unusual or exceptional condition.
Implements detection of unusual or exceptional conditions followed by safe mode entry, reducing the window for exploitation of unchecked conditions.
Training ensures users perform required checks for unusual or exceptional conditions as part of contingency roles, limiting attacker leverage from skipped validations.
IR testing directly validates checks for unusual or exceptional conditions that could indicate security incidents.
Requires ongoing monitoring of organization-defined metrics and analysis, enabling checks for unusual or exceptional conditions.
Security testing routinely checks for unusual or exceptional inputs/conditions, identifying missing validation steps that flaw remediation then resolves.
Requires detection of unusual conditions followed by a controlled transition to the defined failure state.
MTTF determination forces explicit checks for conditions that precede predictable component failure.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote unauthenticated exploitation of public-facing Drupal module via forceful browsing directly matches T1190; resulting application DoS matches T1499.004.
NVD Description
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.
Deeper analysisAI
CVE-2025-14840 is an Improper Check for Unusual or Exceptional Conditions vulnerability (CWE-754) in the Drupal HTTP Client Manager module, enabling forceful browsing. This issue affects HTTP Client Manager versions from 0.0.0 before 9.3.13, from 10.0.0 before 10.0.2, and from 11.0.0 before 11.0.1. The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating high-impact denial of service potential over the network.
Remote, unauthenticated attackers can exploit this vulnerability with low attack complexity and no user interaction required. Successful exploitation results in a denial of service condition with high availability impact, while confidentiality and integrity are not affected.
The Drupal security advisory at https://www.drupal.org/sa-contrib-2025-126 details the vulnerability. Mitigation requires updating to HTTP Client Manager version 9.3.13 or later (for 9.x), 10.0.2 or later (for 10.x), or 11.0.1 or later (for 11.x).
Details
- CWE(s)