CVE-2026-27948
mediumpriority · track · 24EPSS 0.002 · 9 %ileEUUSEPSS · scored 2026-10-27
Copyparty is a portable file server. In versions prior to 1.20.9, an XSS allows for reflected cross-site scripting via URL-parameter `?setck=...`. Version 1.20.9 fixes the issue.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-62cr-6wp5-q43hCopyparty vulnerable to reflected XSS via setck parameter2026-02-26ghsa · osvUS
### Summary An XSS allows for reflected cross-site scripting via URL-parameter `?setck=...` ### Details A reflected cross-site scripting (XSS) vulnerability could allow an attacker to execute malicious javascript by tricking users into accessing a malicious link. The worst-case outcome of this is being able to move or delete existing files on the server, or upload new files, using the account of the person who clicks the malicious link. ### Indicators of Compromise All attempted attacks (successful or not) would be logged to both the copyparty serverlog and the accesslog of the reverseproxy, and are detected by `grep -E '[?&]setck=[^&"]*%'` (the text `setck=` eventually followed by the `%` character).
- PYSEC-2026-21362026-02-26vendor · osvUS
Copyparty is a portable file server. In versions prior to 1.20.9, an XSS allows for reflected cross-site scripting via URL-parameter `?setck=...`. Version 1.20.9 fixes the issue.
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/9001/copyparty/commit/31b2801fd041f803f4a3d5c12c7d7cb5419048bccnnvd
- https://github.com/9001/copyparty/releasesPatchcnnvd
- https://github.com/9001/copyparty/security/advisories/GHSA-62cr-6wp5-q43hcnnvd
- https://github.com/9001/copyparty/commit/31b2801fd041f803f4a3d5c12c7d7cb5419048bcenisa_euvd
- https://github.com/9001/copyparty/security/advisories/GHSA-62cr-6wp5-q43henisa_euvd
- https://github.com/9001/copyparty/commit/31b2801fd041f803f4a3d5c12c7d7cb5419048bcPatchnvd
- https://github.com/9001/copyparty/security/advisories/GHSA-62cr-6wp5-q43hVendor Advisorynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan