CVE-2026-21433CWE-918

Emlog vulnerable to Server-Side Request Forgery (SSRF)

High · published January 2, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
23.7
In the wild
Unconfirmed
What it is

🚨 A crafty uploaded SVG is all it takes to exploit this vulnerability! 😱 Emlog versions up to 2.5.19 are vulnerable to server-side requests that could give attackers a peek behind your network’s curtain. ⚡ Think of this as a delivery driver who, instead of just dropping off your package, decides to take a detour to check out all the houses on the street. When the server processes that SVG, it sends requests to the attacker’s domain, just like the driver peeking into homes without permission. This could lead to devastating internal network probing, exposing sensitive metadata and potentially even credentials. An attacker could stitch together a map of your internal resources, giving them a frighteningly clear view of your backend systems! 🔥

Put simply

Think of this as a delivery driver who, instead of just dropping off your package, decides to take a detour to check out all the houses on the street. When the server processes that SVG, it sends requests to the attacker’s domain, just like the driver peeking into homes without permission. This vulnerability allows an attacker to upload a specially crafted SVG file to Emlog, resulting in server-side requests to an external host when the SVG is processed, leading to SSRF and potential information leakage.

What to do

This could lead to devastating internal network probing, exposing sensitive metadata and potentially even credentials. An attacker could stitch together a map of your internal resources, giving them a frighteningly clear view of your backend systems! 🔥 To mitigate this vulnerability, immediately restrict SVG uploads and implement server-side validation to sanitize any uploaded files. Keep an eye on Emlog's channels for future patches — as of now, no patched versions are available! 🛡️ You've got this! Stay vigilant and take these steps to keep your site secure! 💪✨

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00319 · 23.7th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-01-02T19:00Z
EPSS history
Timeline
  • 02 JAN 19:00Z
    Emlog vulnerable to Server-Side Request Forgery (SSRF)
    cvelistv5