CVE-2026-21433

HIGH

Emlog < 2.5.19 - SSRF

Title source: rule
STIX 2.1

Description

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.

References (1)

Core 1
Core References
Exploit, Vendor Advisory x_refsource_confirm
https://github.com/emlog/emlog/security/advisories/GHSA-6rwr-c8hc-mjj4

Scores

CVSS v3 7.7
EPSS 0.0005
EPSS Percentile 16.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (1)
emlog/emlog < 2.5.19
Published Jan 02, 2026
Tracked Since Feb 18, 2026