CVE-2026-39879

Database manipulation via unsanitized SQL queries

Published Jul 20, 2026 · Updated Jul 20, 2026

SQL injection in the SQL destination driver in syslog-ng before 4.12 allows remote attackers to alter database data via crafted log messages. afsql_dd_run_query sends SQL assembled from untrusted log-derived values to the database without the required sanitization call. The SQL driver must be manually configured, and attackers must supply a log message through a configured source; injection can corrupt records or interrupt logging.

CVSS severity7.1
High
EPSS probability0.27%
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 the SQL destination driver in syslog-ng before 4.12 allows remote attackers to alter database data via crafted log messages. afsql_dd_run_query sends SQL assembled from untrusted log-derived values to the database without the required sanitization call. The SQL driver must be manually configured, and attackers must supply a log message through a configured source; injection can corrupt records or interrupt logging.

The record

CVE
CVE-2026-39879
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
syslog-ng
Product
syslog-ng
Classifications
CWE-150, T1565.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 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=< 4.12

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

syslog-ng · syslog-ngversion=< 4.12

Published CVSS scores

7.1GitHubCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-150Improper Neutralization of Escape, Meta, or Control Sequences
T1565.001Stored Data Manipulation

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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