Skip to main content

Memos CVE-2026-82476

| EUVDEUVD-2026-68132 MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-08-29 VulnCheck GHSA-rw55-gcm9-cgjp
SSRF Memos
6.9
CVSS 4.0 · Vendor: VulnCheck
Share

Severity by source

Vendor (VulnCheck) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.8 MEDIUM

Network-reachable, no privileges, no interaction; scope changes as server fetches internal hosts; confidentiality limited to meta tag leakage only.

3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Aug 29, 2026 - 17:21 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Server-side request forgery in Memos through 0.30.0 allows unauthenticated remote attackers to make the application's link-metadata fetcher issue HTTP requests to hosts in the 100.64.0.0/10 carrier-grade NAT address space, a range the application's IP blocklist incorrectly omits. The server returns page titles and HTML meta descriptions from targeted internal hosts, enabling partial reconnaissance of CGNAT-addressed infrastructure. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
technique details hidden
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires that the Memos instance's link-metadata fetcher is accessible to the attacker - either because the Memos deployment is internet-facing or because the attacker has network access to it. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 6.9 reflects a moderate, narrowly scoped confidentiality impact: the attacker receives page titles and HTML meta descriptions from CGNAT-addressed hosts, not full HTTP response bodies, limiting intelligence value. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary remediation is to upgrade Memos beyond version 0.30.0 once a patched release is published; monitor the upstream repository at https://github.com/usememos/memos and the GitHub issue https://github.com/usememos/memos/issues/6099 for patch availability. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Memos

View all
CVE-2025-22952 CRITICAL POC
9.8 Feb 27

elestio memos v0.23.0 is vulnerable to Server-Side Request Forgery (SSRF) due to insufficient validation of user-supplie
CVE-2022-4686 CRITICAL POC
9.8 Dec 23

Authorization Bypass Through User-Controlled Key in GitHub repository usememos/memos prior to 0.9.0. Rated critical seve
CVE-2022-4866 CRITICAL POC
9.0 Dec 31

Cross-site Scripting (XSS) - Stored in GitHub repository usememos/memos prior to 0.9.1. Rated critical severity (CVSS 9.
CVE-2022-4865 CRITICAL POC
9.0 Dec 31

Cross-site Scripting (XSS) - Stored in GitHub repository usememos/memos prior to 0.9.1. Rated critical severity (CVSS 9.
CVE-2023-5036 HIGH POC
8.8 Sep 18

Cross-Site Request Forgery (CSRF) in GitHub repository usememos/memos prior to 0.15.1. Rated high severity (CVSS 8.8), t
CVE-2023-4697 HIGH POC
8.8 Sep 01

Improper Privilege Management in GitHub repository usememos/memos prior to 0.13.2. Rated high severity (CVSS 8.8), this

CVE-2022-4844 HIGH POC
8.8 Dec 29

Cross-Site Request Forgery (CSRF) in GitHub repository usememos/memos prior to 0.9.1. Rated high severity (CVSS 8.8), th
CVE-2022-4809 HIGH POC
8.8 Dec 28

Improper Access Control in GitHub repository usememos/memos prior to 0.9.1. Rated high severity (CVSS 8.8), this vulnera
CVE-2022-4808 HIGH POC
8.8 Dec 28

Improper Privilege Management in GitHub repository usememos/memos prior to 0.9.1. Rated high severity (CVSS 8.8), this v
CVE-2022-4803 HIGH POC
8.8 Dec 28

Authorization Bypass Through User-Controlled Key in GitHub repository usememos/memos prior to 0.9.1. Rated high severity
CVE-2022-4689 HIGH POC
8.8 Dec 23

Improper Access Control in GitHub repository usememos/memos prior to 0.9.0. Rated high severity (CVSS 8.8), this vulnera
CVE-2022-4688 HIGH POC
8.8 Dec 23

Improper Authorization in GitHub repository usememos/memos prior to 0.9.0. Rated high severity (CVSS 8.8), this vulnerab

Same weakness CWE-918 – Server-Side Request Forgery (SSRF)

View all
CVE-2021-34473 CRITICAL POC
9.1
CVE-2021-26855 CRITICAL POC
9.1
CVE-2021-21985 CRITICAL POC
9.8
CVE-2022-41040 HIGH POC
8.8
CVE-2024-21893 HIGH POC
8.2
CVE-2021-40438 CRITICAL POC
9.0
CVE-2021-21975 HIGH POC
7.5
CVE-2023-48022 CRITICAL POC
9.8

Same technique SSRF

View all
CVE-2021-34473 CRITICAL POC
9.1
CVE-2021-26855 CRITICAL POC
9.1
CVE-2021-21985 CRITICAL POC
9.8
CVE-2024-21893 HIGH POC
8.2
CVE-2021-40438 CRITICAL POC
9.0
CVE-2021-21975 HIGH POC
7.5
CVE-2016-3718 MEDIUM POC
5.5
CVE-2026-15409 CRITICAL POC
10.0

Share

CVE-2026-82476 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy