CVE-2023-38899Public exploit

Authentication bypass via injectable eposta login field

Published Aug 21, 2023 · Updated Jul 9, 2026

SQL injection in O_Blog 1.0 allows local users to bypass login authentication through a crafted eposta POST form value. The root login endpoint accepts an eposta value containing a quote, an always-true predicate, and a comment marker, causing the credential query to accept the supplied login. Successful exploitation grants an authenticated session; the public record rates access as local and low-privileged, while the project states that the current code does not reproduce the flaw.

CVSS severity7.8
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in O_Blog 1.0 allows local users to bypass login authentication through a crafted eposta POST form value. The root login endpoint accepts an eposta value containing a quote, an always-true predicate, and a comment marker, causing the credential query to accept the supplied login. Successful exploitation grants an authenticated session; the public record rates access as local and low-privileged, while the project states that the current code does not reproduce the flaw.

The record

CVE
CVE-2023-38899
Published
Aug 21, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
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

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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