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TI-2026-17315 Aliases CVE-2026-21430

Emlog: CSRF chained with stored XSS leads to ATO

Priority LOW 36CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Tampering, Cross-site scripting
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-352 and CWE-79.

Summary

Emlog is an open source website building system. In version 2.5.23, article creation functionality is vulnerable to cross-site request forgery (CSRF). This can lead to a user being forced to post an article with arbitrary, attacker-controlled content. This, when combined with stored cross-site scripting, leads to account takeover. As of time of publication, no known patched versions are available.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00185 8th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
emlogemlog= 2.5.23—No fix listedCNA
  • emlog Vendoremlog Affected = 2.5.23 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:emlog:emlog:2.5.23:*:*:*:pro:*:*:*2.5.23Vulnerableemlog
  • cpe:2.3:a:emlog:emlog:2.5.23:*:*:*:pro:*:*:* Versions 2.5.23 Vulnerable ·emlog

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21430

References

Exploit 1

  • TI-2025-21066 An arbitrary file upload vulnerability in the component /views/plugin.php of emlog pro… CVSS 3.1CRITICAL 9.8
  • TI-2025-19139 An arbitrary file upload vulnerability in the component admin\plugin.php of Emlog Pro… CVSS 3.1CRITICAL 9.8
  • TI-2023-24041 An arbitrary file upload vulnerability in the component /admin/plugin.php of Emlog Pro… CVSS 3.1CRITICAL 9.8
  • TI-2023-23173 Deserialization of Untrusted Data in emlog pro v.2.1.15 and earlier allows a remote… CVSS 3.1CRITICAL 9.8
  • TI-2026-18317 emlog Arbitrary File Upload Vulnerability CVSS 4.0CRITICAL 9.3
  • TI-2025-30252 Emlog Pro Contains a File Upload Vulnerability CVSS 4.0HIGH 8.9
See all 92 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences