Appspace
CVE-2021-27564
MEDIUM
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
A stored XSS issue exists in Appspace 6.2.4. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Appspace.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Appspace 6.2.4 allows SSRF via the api/v1/core/proxy/jsonprequest url parameter. Rated critical severity (CVSS 9.8), thi
Appspace 6.2.4 is vulnerable to a broken authentication mechanism where pages such as /medianet/mail.aspx can be called
Appspace 6.2.4 is vulnerable to stored cross-site scripting (XSS) in multiple parameters within /medianet/sgcontentset.a
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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