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CVE

CVE-2026-21433

Emlog vulnerable to Server-Side Request Forgery (SSRF)
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CVE

CVE-2026-21433

Emlog vulnerable to Server-Side Request Forgery (SSRF)

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.

Package Versions Affected

Package Version
patch Availability
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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.7
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21433.json, https://github.com/emlog/emlog/security/advisories/GHSA-6rwr-c8hc-mjj4, https://nvd.nist.gov/vuln/detail/CVE-2026-21433

Severity

7.7

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.7
EPSS Probability
0.00054%
EPSS Percentile
0.16998%
Introduced Version
0
Fix Available

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