CVE-2013-2198Network attack vector

Access-control bypass via flawed username string filtering

Published Jan 30, 2020 · Updated Aug 6, 2024

Access-control bypass in Drupal Login Security 6.x-1.x before 6.x-1.3 and 7.x-1.x before 7.x-1.3 allows remote attackers to evade restrictions. The login-form validation path applies string filtering to a crafted username incorrectly, causing the module to skip every Login Security check. Exploitation is remote and unauthenticated, but requires soft blocking to be disabled; successful use bypasses configured login-form access controls.

CVSS severity9.8
Critical
EPSS probability1.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access-control bypass in Drupal Login Security 6.x-1.x before 6.x-1.3 and 7.x-1.x before 7.x-1.3 allows remote attackers to evade restrictions. The login-form validation path applies string filtering to a crafted username incorrectly, causing the module to skip every Login Security check. Exploitation is remote and unauthenticated, but requires soft blocking to be disabled; successful use bypasses configured login-form access controls.

The record

CVE
CVE-2013-2198
Published
Jan 30, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 30, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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