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CVE-2026-21433

🔴 HIGH

Emlog is an open source website building system. Versions up to and including 2.5.19 are vulnerable to server-side Out-of-Band (OOB) requests / SSRF via uploaded SVG files. An attacker can upload a cr...

Published
Jan 02, 2026
Last Modified
Jan 08, 2026
Views
7
Bookmarks
0

Description

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Emlog is an open source website building system. Versions up to and including 2.5.19 are vulnerable to server-side Out-of-Band (OOB) requests / SSRF via uploaded SVG files. An attacker can upload a crafted SVG to http[:]//emblog/admin/media[.]php which contains external resource references. When the server processes/renders the SVG (thumbnailing, preview, or sanitization), it issues an HTTP request to the attacker-controlled host. Impact: server-side SSRF/OOB leading to internal network probing and potential metadata/credential exposure. As of time of publication, no known patched versions are available.

CVSS Scores

CVSS 3.1 7.7
7.7
HIGH
CVSS 2.0 7.7

References

github.com

Additional Information

Source
security-advisories@github.com
State
Undergoing analysis

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