Account takeover via reflected credentialed CORS origin
Published Aug 20, 2024 · Updated Jan 9, 2025
CORS misconfiguration in Memos 0.20.1 and earlier allows remote attackers to read or alter account data through a malicious website. The server's CORS middleware copies any Origin header into Access-Control-Allow-Origin while permitting credentialed requests to the v1 API. Exploitation requires a signed-in user to interact with an attacker-controlled page in Firefox, enabling private-data access or account-password changes.
Summary
What happened
CORS misconfiguration in Memos 0.20.1 and earlier allows remote attackers to read or alter account data through a malicious website. The server's CORS middleware copies any Origin header into Access-Control-Allow-Origin while permitting credentialed requests to the v1 API. Exploitation requires a signed-in user to interact with an attacker-controlled page in Firefox, enabling private-data access or account-password changes.
The record
- CVE
- CVE-2024-41659
- Published
- Aug 20, 2024
- Updated
- Jan 9, 2025
- Vendor
- Memos
- Product
- Memos
- Classifications
- CWE-942, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 20, 2024CVE publishedPublication date reported by the CVE source.
- Jan 9, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=0.20.1
- Affected versionversion=< 0.21.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Credentialed cross-origin password-change proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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