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TI-2021-13305 Aliases CVE-2021-34190GHSA-8p87-gj5p-jx33

A stored cross site scripting (XSS) vulnerability in index.php?menu=billing_rates of…

Priority LOW 23CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

A stored cross site scripting (XSS) vulnerability in index.php?menu=billing_rates of Issabel PBX version 4 allows attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the "Name" or "Prefix" fields under the "Create New Rate" module.

Why it matters now

EPSS 0.00638 50th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:issabel:pbx:4:*:*:*:*:*:*:*4VulnerableIssabel
  • cpe:2.3:a:issabel:pbx:4:*:*:*:*:*:*:* Versions 4 Vulnerable ·Issabel

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-34190
  2. 2026-10-03 Alias added: GHSA-8p87-gj5p-jx33
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Exploit 2

  • TI-2024-00909 Issabel PBX Asterisk-Cli os command injection CVSS 3.1CRITICAL 9.8
  • TI-2023-19184 An issue in issabel-pbx v.4.0.0-6 allows a remote attacker to obtain sensitive information via the modules directory CVSS 3.1HIGH 7.5
  • TI-2023-19182 Cross Site Request Forgery (CSRF) vulnerability in issabel-pbx v.4.0.0-6 allows a remote… CVSS 3.1HIGH 8.1
  • TI-2023-19181 Cross Site Request Forgery (CSRF) vulnerability in issabel-pbx v.4.0.0-6 allows a remote… CVSS 3.1HIGH 8.1
  • TI-2023-17410 A Cross Site Request Forgery (CSRF) vulnerability in Issabel issabel-pbx v.4.0.0-6 allows… CVSS 3.1MEDIUM 6.8
  • TI-2023-18825 A stored cross-site scripting (XSS) vulnerability in Issabel issabel-pbx v.4.0.0-6 allows… CVSS 3.1MEDIUM 4.8
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences