Which versions of Emlog are affected by CVE-2026-21429?

Organizations using Emlog should be aware of moderate risk from CVE-2026-21429, a missing authorization vulnerability rated CVSS 4.3. Attackers could gain access beyond their authorized level.

Is there a public PoC exploit available for CVE-2026-21429?

Yes, a public proof-of-concept exploit is available for CVE-2026-21429. Prioritise patching immediately. EPSS: 0.0%.

Emlog CVE-2026-21429

Q: What is the CVSS score of CVE-2026-21429?

CVE-2026-21429 has a CVSS 4.0 base score of 2.0 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

LOW

Missing Authorization (CWE-862)

2026-01-02 security-advisories@github.com

Authentication Bypass Emlog

2.0

CVSS 4.0 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

2.0 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

4.3 (MEDIUM) 2.0 (LOW)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 16, 2026 - 17:11 vuln.today

Public exploit code

CVE Published

Jan 02, 2026 - 18:15 nvd

MEDIUM 4.3

DescriptionGitHub Advisory

Emlog is an open source website building system. In version 2.5.23, the admin can set controls which makes users unable to edit or delete their articles after publishing them. As of time of publication, no known patched versions are available.

AnalysisAI

Emlog 2.5.23 contains an integrity bypass vulnerability that allows authenticated administrators to restrict legitimate users from editing or deleting their own published articles through improper access controls. This medium-severity flaw (CVSS 4.3) enables privileged users to modify content permissions without authorization, and public exploit code exists. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 4.3 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker (requires authentication) could exploit this vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

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Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-21429 vulnerability details – vuln.today

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