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

CVE-2026-57317

HIGH · 7.1 CVSS v3.1 Published 2026-06-26
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 8 weeks old

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 Simply Schedule Appointments <= 1.6.12.2 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 Simply Schedule Appointments WordPress plugin versions 1.6.12.2 and below allows unauthenticated attackers to inject malicious scripts into pages viewed by other users.

MitigationUpdate Simply Schedule Appointments plugin to a version newer than 1.6.12.2. If no patched version is available, disable or remove the plugin 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. Verify Simply Schedule Appointments plugin is installed
    Check the WordPress plugins directory (wp-content/plugins/) for a folder named 'simply-schedule-appointments' or view installed plugins in WordPress admin under Plugins > Installed Plugins
    Affected if Plugin folder exists in wp-content/plugins/ or plugin appears in WordPress admin plugins list
  2. Determine installed plugin version
    Open the main plugin file (typically simply-schedule-appointments.php) and look for the 'Version' header in the plugin comments, or check the version displayed next to the plugin name in WordPress admin > Plugins
    Affected if Version is 1.6.12.2 or lower (any version up to and including 1.6.12.2)
  3. Confirm plugin is active
    Check WordPress admin > Plugins > Installed Plugins to see if Simply Schedule Appointments shows as 'Active', or query the wp_options table for option_name = 'active_plugins'
    Affected if Plugin is active and running on the site

You are affected if the Simply Schedule Appointments plugin is installed, active, and running version 1.6.12.2 or lower.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update Simply Schedule Appointments plugin to a version newer than 1.6.12.2. If no patched version is available, disable or remove the plugin until a fix is released.

Recommended fix Moderate confidence

Simply Schedule Appointments version 1.6.12.3 or latest available

  1. 1. Log in to the WordPress admin dashboard
  2. 2. Navigate to Plugins > Installed Plugins
  3. 3. Locate Simply Schedule Appointments plugin
  4. 4. If an update is available, click 'Update Now' to install the latest version
  5. 5. Alternatively, download the latest version from the WordPress plugin repository and upload via Plugins > Add New > Upload Plugin
  6. 6. After updating, verify the plugin is running version 1.6.12.3 or higher

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,640
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.

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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-2026-57317 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