XSS in Openises Tickets

CVE-2026-35011

Open ISES Tickets before 3.44.2 contains a reflected cross-site scripting vulnerability in opena.php that allows authenticated attackers to inject arbitrary JavaScript by passing an unsanitized value through the frm_call GET parameter directly into page output. Attackers can craft a malicious URL containing a JavaScript payload in the frm_call parameter that executes in the victim's browser when the URL is visited.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-35011: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-35011?
CVE-2026-35011 is a medium-severity vulnerability in Openises Tickets, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-05-20.
How severe is CVE-2026-35011?
Medium severity. CVSS v3 base score is 4.6 out of 10.