Sysaid
CVE-2021-31862
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.1 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
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.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
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. SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication. Affected products include: Sysaid.
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)NVD
In SysAid On-Premise before 23.3.36, a path traversal vulnerability leads to code execution after an attacker writes a f
SysAid On-Prem versions through 23.3.40 contain an unauthenticated XXE injection in the Checkin processing, enabling adm
SysAid On-Prem contains a second unauthenticated XXE injection in Server URL processing, providing an alternative attack
Multiple directory traversal vulnerabilities in SysAid Help Desk before 15.2 allow remote attackers to (1) read arbitrar
The RdsLogsEntry servlet in SysAid Help Desk before 15.2 does not properly check file extensions, which allows remote at
Unrestricted file upload vulnerability in ChangePhoto.jsp in SysAid Help Desk before 15.2 allows remote administrators t
SysAid Help Desk before 15.2 does not properly restrict access to certain functionality, which allows remote attackers t
SysAid Help Desk before 15.2 allows remote attackers to obtain sensitive information via an invalid value in the account
SysAid Help Desk before 15.2 uses a hardcoded encryption key, which makes it easier for remote attackers to obtain sensi
SysAid On-Prem versions <= 23.3.40 are vulnerable to an unauthenticated XML External Entity (XXE) vulnerability in the l
SysAid Help Desk before 15.2 allows remote attackers to cause a denial of service (CPU and memory consumption) via a lar
SysAid On-Premise 20.1.11, by default, allows the AJP protocol port, which is vulnerable to a GhostCat attack. Rated cri
Exploit-DB