CVE-2026-97868Network attack vector

Script execution via unsanitized rendered note HTML

Published Sep 25, 2026 · Updated Sep 25, 2026

Cross-site scripting in Sheshbabu Zen 1.5.0 and earlier allows remote attackers to execute scripts through crafted note content. The Note Editor passes Markdown output from renderMarkdown directly to dangerouslySetInnerHTML, while that renderer returns unsanitized markdown-it HTML; the title is also assigned to the same sink. Execution occurs when the affected Note Editor displays attacker-controlled content, placing the script in the application's browser context.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Cross-site scripting in Sheshbabu Zen 1.5.0 and earlier allows remote attackers to execute scripts through crafted note content. The Note Editor passes Markdown output from renderMarkdown directly to dangerouslySetInnerHTML, while that renderer returns unsanitized markdown-it HTML; the title is also assigned to the same sink. Execution occurs when the affected Note Editor displays attacker-controlled content, placing the script in the application's browser context.

The record

CVE
CVE-2026-97868
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
Sheshbabu
Product
Zen
Classifications
T1059.007
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=1.0
  2. Affected versionversion=1.1
  3. Affected versionversion=1.2
  4. Affected versionversion=1.3
  5. Affected versionversion=1.4
  6. Affected versionversion=1.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Sheshbabu · Zenversion=1.0; version=1.1; version=1.2; version=1.3; version=1.4; version=1.5.0

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007Command and Scripting Interpreter: JavaScript

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

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started