CVE-2021-31862 Cross-site scripting in n/a
Unauthenticated attackers can execute arbitrary scripts via the KeepAlive.jsp stamp parameter in SysAid, potentially leading to session hijacking or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-31862?
CVE-2021-31862 is a medium-severity cross-site scripting vulnerability in n/a, published on 29 Oct 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
Weakness: CWE-79
Which versions are affected by CVE-2021-31862?
It affects 1 product.
Products include Sysaid Sysaid.
How do I fix CVE-2021-31862?
No fix has been published for CVE-2021-31862 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-31862 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-31862 exists.
Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
- CVE-2023-47246 SysAid Server Path Traversal
- CVE-2025-2775 SysAid On-Prem Improper Restriction of XML External Entity Reference
- CVE-2025-2776 SysAid On-Prem Improper Restriction of XML External Entity Reference
- CVE-2024-36393 SysAid - CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
- CVE-2025-2777 SysAid On-Prem <= 23.3.40 lshw Proceessing XML External Entity Injection
Sources
Also known as GHSA-vvgj-cxq9-3437.