How severe is CVE-2025-50738?

CVE-2025-50738 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-50738 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-50738?

CVE-2025-50738 affects Usememos Memos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-50738?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-50738 have an EU (EUVD) identifier?

Yes. CVE-2025-50738 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23004.

When was CVE-2025-50738 published?

CVE-2025-50738 was published on 2025-07-29 and last updated on 2026-06-17.

CVE-2025-50738

CVE-2025-50738 is a critical-severity vulnerability in Usememos Memos with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23004
Weakness: CWE-200
Affected product: Usememos Memos
Published: 2025-07-29
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-50738?: 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.
How severe is CVE-2025-50738?: CVE-2025-50738 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-50738 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-50738?: CVE-2025-50738 affects Usememos Memos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-50738?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-50738 have an EU (EUVD) identifier?: Yes. CVE-2025-50738 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23004.
When was CVE-2025-50738 published?: CVE-2025-50738 was published on 2025-07-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:usememos:memos:*:*:*:*:*:*:*:*

More vulnerabilities in Usememos Memos

CVE-2025-22952 — Critical (CVSS 9.8): elestio memos v0.23.0 is vulnerable to Server-Side Request Forgery (SSRF) due to insufficient validation of…
CVE-2023-4696 — Critical (CVSS 9.8): Improper Access Control in GitHub repository usememos/memos prior to 0.13.2.
CVE-2022-4686 — Critical (CVSS 9.8): Authorization Bypass Through User-Controlled Key in GitHub repository usememos/memos prior to 0.9.0.
CVE-2022-4866 — Critical (CVSS 9.0): Cross-site Scripting (XSS) - Stored in GitHub repository usememos/memos prior to 0.9.1.
CVE-2022-4865 — Critical (CVSS 9.0): Cross-site Scripting (XSS) - Stored in GitHub repository usememos/memos prior to 0.9.1.
CVE-2023-5036 — High (CVSS 8.8): Cross-Site Request Forgery (CSRF) in GitHub repository usememos/memos prior to 0.15.1.

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