Critical severity · published Feb 25, 2026
CVE-2026-3187
feiyuchuixue sz-boot-parent API Endpoint upload unrestricted upload
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
A vulnerability was identified in feiyuchuixue sz-boot-parent up to 1.3.2-beta. Affected by this issue is some unknown functionality of the file /api/admin/sys-file/upload of the component API Endpoint. Such manipulation leads to unrestricted upload. The attack may be launched remotely. The exploit is publicly available and might be used. Upgrading to version 1.3.3-beta can resolve this issue. The name of the patch is aefaabfd7527188bfba3c8c9eee17c316d094802. Upgrading the affected component is recommended. The project was informed beforehand and acted very professional: "We have introduced a whitelist restriction on the /api/admin/sys-file/upload endpoint via the oss.allowedExts and oss.allowedMimeTypes configuration options, allowing the specification of permitted file extensions and MIME types for uploads."
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SZ
sz-boot-parent · feiyuchuixue
1.3.2-beta · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3187
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3187
Product
https://github.com/feiyuchuixue/sz-boot-parent/
Patch
https://github.com/feiyuchuixue/sz-boot-parent/commit/aefaabfd7527188bfba3c8c9eee17c316d094802
Release Notes
https://github.com/feiyuchuixue/sz-boot-parent/releases/tag/v1.3.3-beta
Exploit
https://github.com/yuccun/CVE/blob/main/sz-boot-parent-Arbitrary_File_Upload.md
Permissions Required
https://vuldb.com/?ctiid.347745
Third Party Advisory
https://vuldb.com/?id.347745
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