Document disclosure via hard-coded file-cache nonce
Published Nov 17, 2025 · Updated Nov 17, 2025
Hard-coded credentials in the OnlyOffice module in NixOS Nixpkgs 22.11 through 24.11 allow remote attackers to read cached documents. The same default affects Unstable before 25.11: securityNonceFile points to an Nginx snippet that sets secure_link_secret to the public literal mynonce. Exploitation requires an existing revision ID, limiting disclosure primarily to known documents after access expires.
Summary
What happened
Hard-coded credentials in the OnlyOffice module in NixOS Nixpkgs 22.11 through 24.11 allow remote attackers to read cached documents. The same default affects Unstable before 25.11: securityNonceFile points to an Nginx snippet that sets secure_link_secret to the public literal mynonce. Exploitation requires an existing revision ID, limiting disclosure primarily to known documents after access expires.
The record
- CVE
- CVE-2025-64766
- Published
- Nov 17, 2025
- Updated
- Nov 17, 2025
- Vendor
- NixOS
- Product
- Nixpkgs
- Classifications
- CWE-798, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 17, 2025CVE publishedPublication date reported by the CVE source.
- Nov 17, 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=>= 22.11, < 25.05
- Affected versionversion=< Unstable 25.11
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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