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Fencer Vulns
medium 5.4

CVE-2020-35724 json

Reflected XSS in Quest Policy Authority 8.1.2.200 allows remote attackers to inject malicious code into the browser via a specially crafted…

published 2021-01-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23381

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

Reflected XSS in Quest Policy Authority 8.1.2.200 allows remote attackers to inject malicious code into the browser via a specially crafted link to the Error.jsp file via the err parameter (or indirectly via the cpr, tcp, or abs parameter). NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Exploit prediction

1.25% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • un4gi.io https://un4gi.io/blog/multiple-vulnerabilities-in-quest-policy-authority-for-unified-communications referenced PoC, tagged "exploit" by a source, unverified
  • clandestinelabs.io https://clandestinelabs.io/security-advisories/advisory-multiple-vulnerabilities-in-quest-policy-authority-for-unified-communications referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/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.