CVE-2021-31862
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
- Record
CVE-2021-31862- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
- Record
CVE-2021-31862- Updated
- 2026-11-02
EUVDEUVD-2021-18737 No score
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
- Record
EUVD-2021-18737- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vvgj-cxq9-3437 No score
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
- Record
GHSA-vvgj-cxq9-3437- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Nuclei | SysAid 20.4.74 - Cross-Site Scripting | |
| PoC in GitHub | RobertDra/CVE-2021-31862 | 2021-10-28 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-31862 is a medium vulnerability (CVSS 6.1) in Sysaid, published October 29, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.98%, the 90th percentile. No source names a fixed version.