Vulnerability · Published Feb 16, 2026 · Assigned by VulDB

CVE-2026-2557cskefu File Upload MediaController.java upload cross site scripting

Low 3.5

In plain English

A low-severity cross-site scripting in cskefu. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).

Severity (CVSS 3.1)3.5Low

Exploit odds (30 days)0.3%top 81.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in cskefu up to 8.0.1. Impacted is the function Upload of the file com/cskefu/cc/controller/resource/MediaController.java of the component File Upload. The manipulation results in cross site scripting. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
n/a	cskefu	8.0.08.0.1

Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-346165 | cskefu File Upload MediaController.java upload cross site scripting vdb-entry, technical-description
VDB-346165 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #750729 | cskefu v8 Improper Input Validation third-party-advisory
https://fx4tqqfvdw4.feishu.cn/docx/ZqvtdTniToQMw0xZL94cTpuTnac exploit