CVE-2026-34228Public exploitNetwork attack vector

SQL execution and file write via upgrade CSRF

Published Apr 3, 2026 · Updated Apr 3, 2026

CSRF in emlog before 2.6.8 allows remote attackers to execute arbitrary SQL and write files via an administrator-opened link. admin/upgrade.php reads source and upsql from GET parameters, executes downloaded SQL, and extracts a referenced ZIP into the web root without checking a CSRF token. An authenticated administrator must open the crafted link; the resulting database and web-root modifications allow full site compromise.

CVSS severity8.7
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in emlog before 2.6.8 allows remote attackers to execute arbitrary SQL and write files via an administrator-opened link. admin/upgrade.php reads source and upsql from GET parameters, executes downloaded SQL, and extracts a referenced ZIP into the web root without checking a CSRF token. An authenticated administrator must open the crafted link; the resulting database and web-root modifications allow full site compromise.

The record

CVE
CVE-2026-34228
Published
Apr 3, 2026
Updated
Apr 3, 2026
Vendor
emlog
Product
emlog
Classifications
CWE-352, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 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=< 2.6.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

emlog · emlogversion=< 2.6.8

Published CVSS scores

8.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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 exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
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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