CVE-2025-8995Network attack vector

Unauthenticated account takeover via under-validated AJAX callbacks

Published Aug 15, 2025 · Updated Feb 26, 2026

Authentication bypass in Drupal Authenticator Login before 2.1.4 allows remote attackers to log in as any user with a known username. The module's AJAX callbacks for the standard login form accept a multi-request authentication sequence without sufficiently validating completed authentication. No credentials are required, but exploitation requires a short series of requests—five by default—and grants the target account's access.

CVSS severity9.8
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Drupal Authenticator Login before 2.1.4 allows remote attackers to log in as any user with a known username. The module's AJAX callbacks for the standard login form accept a multi-request authentication sequence without sufficiently validating completed authentication. No credentials are required, but exploitation requires a short series of requests—five by default—and grants the target account's access.

The record

CVE
CVE-2025-8995
Published
Aug 15, 2025
Updated
Feb 26, 2026
Vendor
OAuth.js
Product
Authenticator Login
Classifications
CWE-306, CWE-288, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.0 <2.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OAuth.js · Authenticator Loginversion=0.0.0 <2.1.4

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-288Authentication Bypass Using an Alternate Path or Channel
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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