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Fencer Vulns
medium 6.1

CVE-2021-40959 json

A reflected cross-site scripting vulnerability in MONITORAPP Application Insight Web Application Firewall (AIWAF) <= 4.1.6 and <=5.0 was id…

published 2024-12-20 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2021-28113

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

A reflected cross-site scripting vulnerability in MONITORAPP Application Insight Web Application Firewall (AIWAF) <= 4.1.6 and <=5.0 was identified on the subpage `/process_management/process_status.xhr.php`. This vulnerability allows an attacker to inject malicious scripts that execute in the context of the victim's session.

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
22 mo ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.