CyberSecBulletin

Issabel Foundation vulnerabilities

We track 1 vulnerability in Issabel Foundation products. 1 is rated high or critical, and none are known to be exploited. The most recent was published on September 15, 2026.

1vulnerabilities
1critical
0high
0exploited
9.8average CVSS score

Latest Issabel Foundation vulnerabilities

  • 9.8 Critical severity

    Issabel Framework: Use of Hard-coded Cryptographic Key

    CVE-2026-89026Issabel FoundationEPSS 2.7%

    The Issabel Framework, the web framework supporting Issabel PBX software, before commit b97dbaf contains a hard-coded HS256 JWT signing key in the pbxapi index.php file that is identical across every installation, allowing unauthenticated remote attackers to f