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

Q: How do I fix CVE-2025-50738?

memos: upgrade to newer than 0.24.3. Exact commands for each OS are on this page.

Q: Is CVE-2025-50738 being exploited?

CVE-2025-50738 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-50738 affect?

CVE-2025-50738 affects memos. Severity is critical (CVSS 9.8). 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 consen

Q: How urgent is CVE-2025-50738?

Priority 68/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-50738 is a critical-severity flaw (CVSS 9.8) affecting memos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 att

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-200
Published	2025-07-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: usememos

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-07-29 15:15 UTCPublished CVE record published
2026-06-17 09:35 UTCUpdated Record last modified

usememos memos UPGRADE

Affected: <= 0.24.3

Fixed in: newer than 0.24.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy memos || rpm -q memos || memos --version

2. UPGRADE to newer than 0.24.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade memos

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade memos

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Go · github.com/usememos/memos · FIXED · 0.24.4 · vulnerable: < 0.24.4 · source

go get github.com/usememos/memos@v0.24.4 go list -m github.com/usememos/memos

Fedora 46 · R · FIXED · 4.6.2-1.fc46 · FEDORA-2026-1dd919a262 · source

sudo dnf upgrade --advisory=FEDORA-2026-1dd919a262

Fedora ELN · perl-Mail-AuthenticationResults · FIXED · 2.20261029-1.eln159 · FEDORA-2026-a2c11d7da6 · source

sudo dnf upgrade --advisory=FEDORA-2026-a2c11d7da6

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: tiemio/CVE-2025-50738-PoC (0 stars)
Write-up: github.com/fai1424/Vulnerability-Research/tree/main/CVE-2025-50738

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-50738?

memos: upgrade to newer than 0.24.3. Exact commands for each OS are on this page.

Is CVE-2025-50738 being exploited?

CVE-2025-50738 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-50738 affect?

CVE-2025-50738 affects memos. Severity is critical (CVSS 9.8). 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 consen

How urgent is CVE-2025-50738?

Priority 68/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

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CVE-2025-65799 MEDIUM 4.3 DOWNGRADE A lack of file name validation or verification in the Attachment service of usememos memos v0.25.2 allows atta
CVE-2025-65795 HIGH 7.5 DOWNGRADE Incorrect access control in the /api/v1/user endpoint of usememos memos v0.25.2 allows unauthorized attackers
CVE-2025-65797 MEDIUM 6.5 DOWNGRADE Incorrect access control in the Identity Provider service of usememos memos v0.25.2 allows attackers with low-

References

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