Emlog is an open source website building system. emlog v2.6.1 and earlier exposes a REST API endpoint (/index.php?rest-api=upload) for media file uploads. The endpoint fails to implement proper validation of file types, extensions, and content, allowing authenticated attackers (with a valid API key or admin session cookie) to upload arbitrary files (including malicious PHP scripts) to the server. An attacker can obtain the API key either by gaining administrator access to enable the REST API setting, or via information disclosure vulnerabilities in the application. Once uploaded, the malicious PHP file can be executed to gain remote code execution (RCE) on the target server, leading to full server compromise.
Metrics
Affected Vendors & Products
References
History
Wed, 21 Jan 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:* | |
| Metrics |
cvssV3_1
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Tue, 13 Jan 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Tue, 13 Jan 2026 09:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Emlog
Emlog emlog |
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| Vendors & Products |
Emlog
Emlog emlog |
Mon, 12 Jan 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Emlog is an open source website building system. emlog v2.6.1 and earlier exposes a REST API endpoint (/index.php?rest-api=upload) for media file uploads. The endpoint fails to implement proper validation of file types, extensions, and content, allowing authenticated attackers (with a valid API key or admin session cookie) to upload arbitrary files (including malicious PHP scripts) to the server. An attacker can obtain the API key either by gaining administrator access to enable the REST API setting, or via information disclosure vulnerabilities in the application. Once uploaded, the malicious PHP file can be executed to gain remote code execution (RCE) on the target server, leading to full server compromise. | |
| Title | emlog Arbitrary File Upload Vulnerability | |
| Weaknesses | CWE-434 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-01-12T22:05:01.012Z
Updated: 2026-01-13T19:08:11.094Z
Reserved: 2026-01-09T22:50:10.287Z
Link: CVE-2026-22799
Updated: 2026-01-13T14:14:16.453Z
Status : Analyzed
Published: 2026-01-12T22:16:08.930
Modified: 2026-01-21T19:13:49.570
Link: CVE-2026-22799
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