Skip to content
Fencer Intel
medium 5.4

CVE-2020-8263 json

A vulnerability in the authenticated user web interface of Pulse Connect Secure < 9.1R9 could allow attackers to conduct Cross-Site Scripti…

published 6y ago modified 4mo ago also EUVD-2020-29133

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

A vulnerability in the authenticated user web interface of Pulse Connect Secure < 9.1R9 could allow attackers to conduct Cross-Site Scripting (XSS) through the CGI file.

Patch / fix

  • pulsesecure pulse_secure_desktop_client 9.1

Is CVE-2020-8263 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

0.69% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).

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

Affected products

  • n/a Pulse Connect Secure / Pulse Policy Secure

Classification

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

References

Sources

Fencer Intel 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.