CVE-2025-50738

The Memos application, up to version v0.24.3, allows for the embedding of markdown images with arbitrary URLs

Critical · published July 29, 2025

CVSS v3.1
9.8
EPSS
2%
Percentile
83.7
In the wild
Unconfirmed
What it is

🔥 A markdown image in your memo could get your IP and browser info without you even lifting a finger! Think of it like sending an invitation to a party that includes a hidden tracker — just by opening the invite, you unknowingly share your location and details with the host. This vulnerability lets attackers gather sensitive data simply by embedding an image into their memos. The consequences are absolutely devastating! An attacker could harvest your IP address, browser User-Agent string, and more, paving the way for targeted tracking and potential exploitation. Imagine someone lurking in the shadows, ready to pounce just by you checking out a memo — this is a serious breach of privacy!

Put simply

Think of it like sending an invitation to a party that includes a hidden tracker — just by opening the invite, you unknowingly share your location and details with the host. This vulnerability lets attackers gather sensitive data simply by embedding an image into their memos. This vulnerability in the Memos application (up to version v0.24.3) allows for the embedding of markdown images with arbitrary URLs. When viewed, the memo fetches these images without user consent, exposing sensitive request-specific information to an attacker-controlled server.

What to do

The consequences are absolutely devastating! An attacker could harvest your IP address, browser User-Agent string, and more, paving the way for targeted tracking and potential exploitation. Imagine someone lurking in the shadows, ready to pounce just by you checking out a memo — this is a serious breach of privacy! To safeguard against this vulnerability, update the Memos application to version v0.24.4 immediately. Additionally, consider implementing input validation to restrict image URLs and conducting user awareness training on potential phishing techniques. You've got this! With these steps, you’ll be well on your way to locking down your privacy! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02375 · 83.7th percentile
Published
2025-07-29T00:00Z
EPSS history
Timeline
  • 29 JUL 00:00Z
    The Memos application, up to version v0.24.3, allows for the embedding of markdown images with arbitrary URLs
    cvelistv5