CVE-2026-30974 — MEDIUM (4.6)

Q: How severe is CVE-2026-30974?

CVE-2026-30974 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-30974?

Check the references section above for vendor advisories and patch information. Affected products include: 9001 Copyparty.

Vulnerability Description

Copyparty is a portable file server. Prior to v1.20.11., the nohtml config option, intended to prevent execution of JavaScript in user-uploaded HTML files, did not apply to SVG images. A user with write-permission could upload an SVG containing embedded JavaScript, which would execute in the context of whichever user opens it. This has been fixed in v1.20.11.

CVSS Score

4.6

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
9001	Copyparty	< 1.20.11

Related Weaknesses (CWE)

CWE-79

References

https://github.com/9001/copyparty/commit/1c9f894e149b6be3cc7de81efc93a4ce4766e0ePatch
https://github.com/9001/copyparty/releases/tag/v1.20.11ProductRelease Notes
https://github.com/9001/copyparty/security/advisories/GHSA-m6hv-x64c-27mmVendor Advisory

FAQ

What is CVE-2026-30974?

CVE-2026-30974 is a vulnerability with a CVSS score of 4.6 (MEDIUM). Copyparty is a portable file server. Prior to v1.20.11., the nohtml config option, intended to prevent execution of JavaScript in user-uploaded HTML files, did not apply to SVG images. A user with wri...

How severe is CVE-2026-30974?

CVE-2026-30974 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-30974?

Check the references section above for vendor advisories and patch information. Affected products include: 9001 Copyparty.