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Open ISES Tickets CVE-2026-48247

| EUVD-2026-31326 HIGH
Improper Certificate Validation (CWE-295)
2026-05-21 VulnCheck GHSA-24vx-5h6h-8q7m
8.2
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

4
Source Code Evidence Fetched
May 21, 2026 - 18:33 vuln.today
Analysis Generated
May 21, 2026 - 18:33 vuln.today
Severity Changed
May 21, 2026 - 18:22 NVD
MEDIUM HIGH
CVSS changed
May 21, 2026 - 18:22 NVD
5.9 (MEDIUM) 8.2 (HIGH)

DescriptionNVD

Open ISES Tickets before 3.44.2 disables TLS certificate verification in incs/functions.inc.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests for general-purpose outbound HTTPS requests issued by the shared helper functions. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.

AnalysisAI

Man-in-the-middle exposure in Open ISES Tickets before 3.44.2 stems from the shared helper functions in incs/functions.inc.php disabling TLS certificate verification (CURLOPT_SSL_VERIFYPEER=false) on outbound HTTPS calls, letting network-positioned attackers intercept or modify traffic carrying API keys and session data. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV, but the vendor's v3.44.2 release notes describe it as a critical security update that also bundles fixes for 88 other issues including XSS and SQL injection.

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RemediationAI

24 hours: Identify and document all Open ISES Tickets instances and current versions in your environment. 7 days: Deploy vendor patch to upgrade all instances to v3.44.2, beginning with non-production systems to validate compatibility. …

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CVE-2026-48247 vulnerability details – vuln.today

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