CVE-2026-55572Public exploitNetwork attack vectorHinoki check available

Unauthenticated SQL injection via unescaped login username

Published Oct 14, 2026 · Updated Oct 14, 2026

SQL injection in e107 alt_auth before 2.3.7 allows remote attackers to read or modify external database data via login usernames. The login() methods in otherdb_auth.php and e107db_auth.php interpolate the username into SQL and execute it with PDO::query() before sanitization. Exploitation requires alt_auth installed with a live otherdb or e107db connection; database-account privileges bound data access, and query failures additionally disclose generated SQL through debug messages.

CVSS severity10.0
Critical
EPSS probability0.52%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SQL injection in e107 alt_auth before 2.3.7 allows remote attackers to read or modify external database data via login usernames. The login() methods in otherdb_auth.php and e107db_auth.php interpolate the username into SQL and execute it with PDO::query() before sanitization. Exploitation requires alt_auth installed with a live otherdb or e107db connection; database-account privileges bound data access, and query failures additionally disclose generated SQL through debug messages.

The record

CVE
CVE-2026-55572
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
e107 Inc
Product
e107
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 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=< 2.3.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

e107 Inc · e107version=< 2.3.7

Published CVSS scores

10.0GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

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Technologies

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