CVE-2026-94210Public exploitNetwork attack vectorHinoki check available

Stored XSS via unescaped Kanban group labels

Published Sep 21, 2026 · Updated Sep 21, 2026

Stored XSS in the Kanban Board in Leantime 3.9.0 through 3.9.8 allows remote authenticated users to execute script in viewers' browsers. Tickets::getAllGrouped passes user-controlled status, milestone, assignee, task-type, and project labels to templates that render the labels as raw markup. An authenticated user must control one of those values and a victim must open the affected board; successful execution can perform actions with the victim's application privileges.

CVSS severityUnavailable
Unscored
EPSS probability0.36%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in the Kanban Board in Leantime 3.9.0 through 3.9.8 allows remote authenticated users to execute script in viewers' browsers. Tickets::getAllGrouped passes user-controlled status, milestone, assignee, task-type, and project labels to templates that render the labels as raw markup. An authenticated user must control one of those values and a victim must open the affected board; successful execution can perform actions with the victim's application privileges.

The record

CVE
CVE-2026-94210
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
Leantime
Product
Leantime
Classifications
CWE-79, CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.9.0
  2. Affected versionversion=3.9.1
  3. Affected versionversion=3.9.2
  4. Affected versionversion=3.9.3
  5. Affected versionversion=3.9.4
  6. Affected versionversion=3.9.5
  7. Affected versionversion=3.9.6
  8. Affected versionversion=3.9.7
  9. Affected versionversion=3.9.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Leantime · Leantimeversion=3.9.0; version=3.9.1; version=3.9.2; version=3.9.3; version=3.9.4; version=3.9.5; version=3.9.6; version=3.9.7; version=3.9.8

Published CVSS scores

3.5VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
5.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
4.0VulDB CNAAV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:OF/RC:C
3.5VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

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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