CVE-2019-16968 — An issue was discovered in FusionPBX up to 4

An issue was discovered in FusionPBX up to 4.5.7. In the file app\conference_controls\conference_control_details.php, an unsanitized id variable coming from the URL is reflected in HTML on 2 occasions, leading to XSS.

01What is this vulnerability?

An issue was discovered in FusionPBX up to 4.5.7. In the file app\conference_controls\conference_control_details.php, an unsanitized id variable coming from the URL is reflected in HTML on 2 occasions, leading to XSS.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-10-21T19:30:38.000Z
• Last modified: 2024-08-05T01:24:48.571Z

09References

• github.com — https://github.com/fusionpbx/fusionpbx/commit/02378c54722d89f875c66ddb00ff06468d…
• resp3ctblog.wordpress.com — https://resp3ctblog.wordpress.com/2019/10/19/fusionpbx-xss-1/