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Fencer Intel
medium 6.1

CVE-2020-35416 json

Multiple cross-site scripting (XSS) vulnerabilities exist in PHPJabbers Appointment Scheduler 2.3, in the index.php admin login webpage (wi…

published 5y ago modified 4mo ago also EUVD-2020-23090

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 86%
public exploits
1
Exploit-DB

Summary

Multiple cross-site scripting (XSS) vulnerabilities exist in PHPJabbers Appointment Scheduler 2.3, in the index.php admin login webpage (with different request parameters), allows remote attackers to inject arbitrary web script or HTML.

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Timeline

  1. Published
  2. First public exploit (EDB-49281)

Exploit prediction

2.71% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-49281 PHPJabbers Appointment Scheduler 2.3 - Reflected XSS (Cross-Site Scripting) webapps, 2020-12-17
  • packetstormsecurity.com http://packetstormsecurity.com/files/160502/PHPJabbers-Appointment-Scheduler-2.3-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/160600/PHPJabbers-Appointment-Scheduler-2.3-Cross-Site-Scripting.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.