usememos Memos up to 0.30.0 Link-Metadata Fetcher server-side request forgery

Summaryinfo

A vulnerability was found in usememos Memos up to 0.30.0 and classified as problematic. Affected is an unknown function of the component Link-Metadata Fetcher. The manipulation results in server-side request forgery. This vulnerability is cataloged as CVE-2026-82476. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in usememos Memos up to 0.30.0. Affected is an unknown code of the component Link-Metadata Fetcher. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality. CVE summarizes:

Memos through 0.30.0 omits the 100.64.0.0/10 carrier-grade NAT address range from SSRF protection in its link-metadata fetcher, allowing unauthenticated attackers to bypass IP validation. Attackers can make the server request internal hosts in that range including cloud metadata services and read page titles and descriptions back.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-82476 since 08/29/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/29/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• usememos

Name

• Memos

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30.0

License

• open-source

Website

• Product: https://github.com/usememos/memos/

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Once again VulDB remains the best source for vulnerability data.

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