CVE-2021-27564

5.4 mediumEPSS 0.5%

Medium (5.4) in appspace appspace. EPSS 0.5% chance of exploitation in the next 30 days.

A stored XSS issue exists in Appspace 6.2.4. After a user is authenticated and enters an XSS payload under the groups section of the network tab, it is stored as the group name. Whenever another member visits that group, this payload executes.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-02-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

appspace:appspace

References

https://github.com/viperbluff/Appspace-Ver-6.2.4-Stored-Xss
https://github.com/viperbluff/Appspace-Ver-6.2.4-Stored-Xss

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