What is CVE-2026-33402?

CVE-2026-33402 is a medium-severity vulnerability in Sakailms Sakai, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-26.

How severe is CVE-2026-33402?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Sakailms Sakai

CVE-2026-33402

Sakai is a Collaboration and Learning Environment (CLE). In versions 23.0 through 23.4 and 25.0 through 25.1, group titles and description can contain cross-site scripting scripts. The patch is included in releases 25.2 and 23.5. As a workaround, one can check the SAKAI_SITE_GROUP table for titles and descriptions that contain this info.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-03-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (17.0th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

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

Affected products

Sakailms Sakai
Sakaiproject Sakai — versions >= 23.0, < 23.5, >= 25.0, < 25.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/sakaiproject/sakai/security/advisories/GHSA-6g62-3898-hpvm (Vendor Advisory)
sakaiproject.atlassian.net/browse/SAK-52311 (Permissions Required)

Frequently asked questions

What is CVE-2026-33402?: CVE-2026-33402 is a medium-severity vulnerability in Sakailms Sakai, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-26.
How severe is CVE-2026-33402?: Medium severity. CVSS v3 base score is 6.1 out of 10.