CVE-2026-3963 Details
Description
A security flaw has been discovered in perfree go-fastdfs-web up to 1.3.7. This affects the function rememberMeManager of the file src/main/java/com/perfree/config/ShiroConfig.java of the component Apache Shiro RememberMe. Performing a manipulation results in use of hard-coded cryptographic key . The attack can be initiated remotely. The complexity of an attack is rather high. The exploitability is reported as difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
A critical vulnerability exists in Perfree Go-Fastdfs-Web versions through 1.3.7, related to the Apache Shiro RememberMe functionality. The issue arises from a hardcoded AES encryption key in the ShiroConfig.java file, specifically within the rememberMeManager function. This vulnerability allows unauthenticated remote attackers to create malicious serialized objects, encrypt them with the known key, and execute remote code on the affected server.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Mar 11, 2026CISA-ADP
Assessed Mar 12, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://vuldb.com/?ctiid.350392 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/?id.350392 | [email protected] | AdvisoryExploitPartial Content |
| https://vuldb.com/?submit.768282 | [email protected] | ExploitTechnical Description |
| https://www.notion.so/go-fastdfs-web-Hardcoded-Apache-Shiro-Cipher-Key-reach-RCE-313ea92a3c41806fae44dffe53e69751 | [email protected] | ExploitTechnical Description |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-320 | Key Management Errors | [email protected] |
| CWE-321 | Use of Hard-coded Cryptographic Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| perfree go-fastdfs-web | All versions |
CPE
Remediation
| |
| Apache Shiro RememberMe | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 11, 2026 | New CVE Received | [email protected] |