CVE-2022-25377

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-02-22 · updated 2026-06-17
Weakness: CWE-22

Description

The ACME-challenge endpoint in Appwrite 0.5.0 through 0.12.x before 0.12.2 allows remote attackers to read arbitrary local files via ../ directory traversal. In order to be vulnerable, APP_STORAGE_CERTIFICATES/.well-known/acme-challenge must exist on disk. (This pathname is automatically created if the user chooses to install Let's Encrypt certificates via Appwrite.)

Affected products

appwrite/appwrite: from 0.5.0 before 0.12.2 — fixed in 0.12.2

How to fix

Upgrade to a fixed version: appwrite/appwrite 0.12.2. Check the vendor advisory for mitigations.

References

https://dubell.io/unauthenticated-lfi-in-appwrite-0.5.0-0.12.1/
https://github.com/appwrite/appwrite/blob/0.12.0/app/controllers/general.php#L539
https://github.com/appwrite/appwrite/pull/2780
https://github.com/appwrite/appwrite/releases/tag/0.12.2
https://dubell.io/unauthenticated-lfi-in-appwrite-0.5.0-0.12.1/
https://github.com/appwrite/appwrite/blob/0.12.0/app/controllers/general.php#L539
https://github.com/appwrite/appwrite/pull/2780
https://github.com/appwrite/appwrite/releases/tag/0.12.2

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