Dromara free-fs 2.0.1 through 2.3.1 contains a stored cross-site scripting vulnerability that allows registered users to run script by…
CVE-2026-129163
Dromara free-fs 2.0.1 through 2.3.1 contains a stored cross-site scripting vulnerability that allows registered users to run script by uploading HTML files served inline as text/html. Attackers can send a victim the /api/file/stream/preview/{fileId} link to execute script in the application origin, calling /apis endpoints to expose the victim's files and account.
Assessment
- CVSS
- 5.1 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 13 November 2026
- Last updated
- 13 November 2026
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
At the source
References
- https://vul.yulun.ac.cn/20261024/free-fs/
- https://github.com/dromara/free-fs/issues/28
- https://github.com/dromara/free-fs/blob/f8f4ff2a0b0af8fcd5cbecbf99a4afb7d0b7c020/fs-modules/fs-file/src/main/java/com/xddcodec/fs/file/controller/FileStreamController.java#L209-L237
- https://www.vulncheck.com/advisories/dromara-free-fs-2.0.1-through-2.3.1-stored-xss-via-file-preview-endpoint
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