CVE-2023-38501 json
copyparty vulnerable to reflected cross-site scripting via k304 parameter
published 2023-07-25 3 y ago modified 2026-06-17 4 mo ago also GHSA-f54q-j679-p9hh , PYSEC-2023-132 , EUVD-2023-0056
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 9.2%
- EPSS 9.2% chance of exploitation in 30 days, percentile 95%
- public exploits
- 1
- Exploit-DB, plus a Nuclei check
Summary
copyparty is file server software. Prior to version 1.8.7, the application contains a reflected cross-site scripting via URL-parameter `?k304=...` and `?setck=...`. 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. It is recommended to change the passwords of one's copyparty accounts, unless one have inspected one's logs and found no trace of attacks. Version 1.8.7 contains a patch for the issue.
Patch / fix
- pypi copyparty 1.8.7
- copyparty_project copyparty 1.8.7
Timeline
- Published
- First public exploit (EDB-51635)
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
9.25% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-51635 copyparty v1.8.6 - Reflected Cross Site Scripting (XSS) webapps, 2023-07-28
- Nuclei template CopyParty v1.8.6 - Cross Site Scripting nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | copyparty | <1.8.7 |
1.8.7 |
Affected products
- 9001 copyparty
- copyparty_project copyparty
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/9001/copyparty/commit/007d948cb982daa05bc6619cd20ee55b7e834c38
web, patch
-
github.com
/9001/copyparty/security/advisories/GHSA-f54q-j679-p9hh
web, vendor-advisory, advisory
-
packetstormsecurity.com
/files/173821/Copyparty-1.8.6-Cross-Site-Scripting.html
web, third-party-advisory, vdb-entry, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-38501
advisory
-
github.com
/9001/copyparty
package
-
github.com
/9001/copyparty/releases/tag/v1.8.7
web
-
github.com
/pypa/advisory-database/tree/main/vulns/copyparty/PYSEC-2023-132.yaml
web
Sources
- CVE List CVE-2023-38501
- GitHub Advisory GHSA-f54q-j679-p9hh
- NVD CVE-2023-38501
- OSV PYSEC-2023-132
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.