CVE-2025-21616: plane XSS — Exploit & Fix

Description

Plane is an open-source project management tool. A cross-site scripting (XSS) vulnerability has been identified in Plane versions prior to 0.23. The vulnerability allows authenticated users to upload SVG files containing malicious JavaScript code as profile images, which gets executed in victims' browsers when viewing the profile image.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
plane	plane	< 0.23.0

References

Advisories & Patches

https://github.com/makeplane/plane/security/advisories/GHSA-rcg8-g69v-x23j https://github.com/makeplane/plane/security/advisories/GHSA-rcg8-g69v-x23j

Exploits

https://github.com/makeplane/plane/security/advisories/GHSA-rcg8-g69v-x23j https://github.com/makeplane/plane/security/advisories/GHSA-rcg8-g69v-x23j

Frequently Asked Questions

What is CVE-2025-21616? +

Plane is an open-source project management tool. A cross-site scripting (XSS) vulnerability has been identified in Plane versions prior to 0.23. The vulnerability allows authenticated users to upload SVG files containing malicious JavaScript code as profile images, which gets executed in victims' browsers when viewing the profile image. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-21616? +

CVE-2025-21616 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-21616? +

CVE-2025-21616 affects products from plane, specifically: plane. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-21616? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-21616