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Cross-site Scripting (XSS)Weakness · CWE-79

CVE-2026-40732

HIGH · 7.1 CVSS v3.1 Published 2026-06-15
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
78/100
Remediation priority · High
Remotely reachable No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Unauthenticated Cross Site Scripting (XSS) in Notification for Telegram <= 3.5 versions.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Unauthenticated Cross Site Scripting (XSS) vulnerability in the Notification for Telegram WordPress plugin versions 3.5 and below. An unauthenticated attacker can inject malicious JavaScript scripts through the plugin's input fields, which are then executed in the browsers of users who view the affected pages.

MitigationUpdate Notification for Telegram plugin to the latest version. If no patched version is available, remove the plugin entirely until a fix is released.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if Notification for Telegram plugin is installed
    Check the WordPress plugins directory (wp-content/plugins/) for a folder related to Telegram notifications, or list all installed plugins via WP-CLI: wp plugin list --status=active --format=csv
    Affected if The plugin folder or listing shows any version of the Notification for Telegram plugin is present
  2. Determine the installed plugin version
    View the plugin's main PHP file header (usually in the plugin folder root) or check the plugin metadata via WordPress admin Plugins page, or use WP-CLI: wp plugin get notification-for-telegram (adjust slug as needed)
    Affected if The displayed version is 3.5 or any version lower than 3.5
  3. Verify the plugin is active
    Check WordPress admin under Plugins > Installed Plugins, or use WP-CLI: wp plugin status notification-for-telegram
    Affected if The plugin shows as Active or enabled
  4. Identify exposed input fields
    Review the plugin settings pages in WordPress admin (usually under Settings or a dedicated Telegram menu item) and front-end forms where the plugin accepts user input
    Affected if Any input fields are present and accessible without authentication, allowing unsanitized data submission

If the Notification for Telegram WordPress plugin versions 3.5 or below is installed and active with accessible input fields, the environment is affected by this unauthenticated XSS vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update Notification for Telegram plugin to the latest version. If no patched version is available, remove the plugin entirely until a fix is released.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-40732 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data