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Fencer Intel
medium 6.1

CVE-2019-9591 json

A reflected Cross-site scripting (XSS) vulnerability in ShoreTel Connect ONSITE before 19.49.1500.0 allows remote attackers to inject arbit…

published 2019-03-06 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-18962

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.3%
EPSS 5.3% chance of exploitation in 30 days, percentile 92%
public exploits
1
Exploit-DB

Summary

A reflected Cross-site scripting (XSS) vulnerability in ShoreTel Connect ONSITE before 19.49.1500.0 allows remote attackers to inject arbitrary web script or HTML via the brandUrl parameter.

Patch / fix

  • mitel connect_onsite 19.49.1500.0

Timeline

  1. Published
  2. First public exploit (EDB-46666)

Exploit prediction

5.33% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-46666 ShoreTel Connect ONSITE < 19.49.1500.0 - Multiple Vulnerabilities webapps, 2019-04-08
  • github.com https://github.com/Ramikan/Vulnerabilities/blob/master/Shoretel%20Connect%20Multiple%20Vulnerability referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/152431/ShoreTel-Connect-ONSITE-Cross-Site-Scripting-Session-Fixation.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

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

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.