Unauthenticated identity disclosure via hard-coded RememberMe key
Published Mar 11, 2026 · Updated Mar 11, 2026
Hard-coded cryptographic key in Apache Shiro RememberMe in Perfree go-fastdfs-web 1.3.0 through 1.3.7 allows remote attackers to read identity data. The rememberMeManager method passes a fixed Base64-decoded value to CookieRememberMeManager.setCipherKey, which Shiro uses to decrypt client-supplied rememberMe cookies before deserialization. No authentication or user interaction is required, but the published assessment limits the demonstrated consequence to disclosure of remembered principal data.
Summary
What happened
Hard-coded cryptographic key in Apache Shiro RememberMe in Perfree go-fastdfs-web 1.3.0 through 1.3.7 allows remote attackers to read identity data. The rememberMeManager method passes a fixed Base64-decoded value to CookieRememberMeManager.setCipherKey, which Shiro uses to decrypt client-supplied rememberMe cookies before deserialization. No authentication or user interaction is required, but the published assessment limits the demonstrated consequence to disclosure of remembered principal data.
The record
- CVE
- CVE-2026-3963
- Published
- Mar 11, 2026
- Updated
- Mar 11, 2026
- Vendor
- Perfree
- Product
- go-fastdfs-web
- Classifications
- CWE-320, CWE-321, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 11, 2026CVE publishedPublication date reported by the CVE source.
- Mar 11, 2026Record 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=1.3.0
- Affected versionversion=1.3.1
- Affected versionversion=1.3.2
- Affected versionversion=1.3.3
- Affected versionversion=1.3.4
- Affected versionversion=1.3.5
- Affected versionversion=1.3.6
- Affected versionversion=1.3.7
What conditions does exploitation require?
What is affected?
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.
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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