Credential disclosure via plaintext browser storage
Published Nov 18, 2025 · Updated Nov 18, 2025
Plaintext password storage in Kotaemon 0.11.0 allows attackers to read credentials from the browser's localStorage. The login.py and main.js login flow writes the raw username and password into persistent localStorage and reads them back without protection. Any script executing in the Kotaemon origin can retrieve and reuse the stored credentials, enabling account takeover.
Summary
What happened
Plaintext password storage in Kotaemon 0.11.0 allows attackers to read credentials from the browser's localStorage. The login.py and main.js login flow writes the raw username and password into persistent localStorage and reads them back without protection. Any script executing in the Kotaemon origin can retrieve and reuse the stored credentials, enabling account takeover.
The record
- CVE
- CVE-2025-56527
- Published
- Nov 18, 2025
- Updated
- Nov 18, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-256, T1555.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 18, 2025CVE publishedPublication date reported by the CVE source.
- Nov 18, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- Kotaemon localStorage credential-exfiltration proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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