CVE-2026-33402Network attack vector

Browser script execution via unneutralized group metadata

Published Mar 26, 2026 · Updated Mar 26, 2026

Stored cross-site scripting in Sakai 23.0 through 23.4 and 25.0 through 25.1 allows remote attackers to run scripts in users' browsers. The site-manage group path stores script-bearing titles and descriptions in SAKAI_SITE_GROUP and later renders them without neutralizing executable content. Exploitation requires a victim to view affected group metadata; the script can read or modify data available to that user's Sakai browser context.

CVSS severity6.1
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Sakai 23.0 through 23.4 and 25.0 through 25.1 allows remote attackers to run scripts in users' browsers. The site-manage group path stores script-bearing titles and descriptions in SAKAI_SITE_GROUP and later renders them without neutralizing executable content. Exploitation requires a victim to view affected group metadata; the script can read or modify data available to that user's Sakai browser context.

The record

CVE
CVE-2026-33402
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
Sakai
Product
Sakai
Classifications
CWE-79, CAPEC-592, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 23.0, < 23.5
  2. Affected versionversion=>= 25.0, < 25.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sakai · Sakaiversion=>= 23.0, < 23.5; version=>= 25.0, < 25.2

Published CVSS scores

1.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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