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  4. CVE 2026 103304 easync 1331 unauthenticated cancellation request
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-103304

eaSYNC < 1.3.31 - Unauthenticated Cancellation Request Creation and Email Template UpdateCVE-2026-103304

Answer in brief

CVE-2026-103304 records a Unknown severity vulnerability in eaSYNC < 1.3.31 - Unauthenticated Cancellation Request Creation and Email Template Update. The current sources do not mark it as known exploited. The current feed maps Unknown/eaSYNC Booking (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 15, 2026Updated Oct 15, 2026Source checked Oct 15, 2026First seen by HOL Oct 15, 2026Material review Oct 15, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/eaSYNC Booking (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Unknown/eaSYNC Bookinggeneric>=0 <1.3.311.3.31

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/eaSYNC Booking.
  2. 2Review the reported fix. Update Unknown/eaSYNC Booking to 1.3.31 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 15, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source description

The eaSYNC Booking WordPress plugin before 1.3.31 does not perform authorization or nonce checks on several of its cancellation-related AJAX actions, allowing unauthenticated users to create booking cancellation requests, trigger booking notification emails, and overwrite the content of the emails the site sends.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Easy HTTPS Redirection (SSL) < 2.0.2 - Subscriber+ Scan Result Disclosure and Site-Wide URL RewriteAlso CWE-862
  • Elementor Website Builder <= 4.2.3 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Exposure via 'is_public' and 'keys_conversion_map' ParametersAlso CWE-862
  • Tutor LMS < 4.1.1 - Unauthenticated Tutor Page Force-Publish and Content OverwriteAlso CWE-862
  • NULL Pointer Dereference in qsyncsrv.cgiSame generic ecosystem
  • NULL Pointer Dereference in qsyncsrv.cgiSame generic ecosystem
  • Stack-based Buffer Overflow in qsyncsrv.cgiSame generic ecosystem

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-862
Source
CVE List V5
Source checked
Oct 15, 2026
References
1 linked source
Open source record