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CVE-2026-11901

The WP Hotel Booking plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in all versions up to, and including, 2.3.1. This is due to the `web_hook_process_paypal_standard()` IPN handler selecting its PayPal validation endpoint from the attacker-controlled `$_REQUEST['test_ipn']` parameter, force-upgrading any `pending` transaction to `completed` when `test_ipn=1`, and omitting post-verification checks on `receiver_email`, `mc_currency`, and `txn_id` uniqueness af
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:33f0aa9ec1796d7e99efafe5a293d0ba31f257eea76b5c5f13ee96008c54eda7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"WP Hotel Booking","vendor":"thimpress","versions":[{"lessThanOrEqual":"2.3.1","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-345","description":"CWE-345 Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/problemTypes/0/descriptions/0

Source references

10 source assertions
{"url":"https://plugins.trac.wordpress.org/browser/wp-hotel-booking/tags/2.3.0/includes/gateways/paypal/class-wphb-payment-gateway-paypal.php#L173"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/wp-hotel-booking/tags/2.3.0/includes/gateways/paypal/class-wphb-payment-gateway-paypal.php#L186"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/browser/wp-hotel-booking/tags/2.3.0/includes/gateways/paypal/class-wphb-payment-gateway-paypal.php#L194"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/wp-hotel-booking/tags/2.3.0/includes/gateways/paypal/class-wphb-payment-gateway-paypal.php#L253"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/4
{"url":"https://plugins.trac.wordpress.org/browser/wp-hotel-booking/tags/2.3.1/includes/gateways/paypal/class-wphb-payment-gateway-paypal.php#L173"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/5
{"url":"https://plugins.trac.wordpress.org/browser/wp-hotel-booking/tags/2.3.1/includes/gateways/paypal/class-wphb-payment-gateway-paypal.php#L186"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/7
{"url":"https://plugins.trac.wordpress.org/browser/wp-hotel-booking/tags/2.3.1/includes/gateways/paypal/class-wphb-payment-gateway-paypal.php#L194"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/6
{"url":"https://plugins.trac.wordpress.org/browser/wp-hotel-booking/tags/2.3.1/includes/gateways/paypal/class-wphb-payment-gateway-paypal.php#L253"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/8
{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3582839%40wp-hotel-booking&new=3582839%40wp-hotel-booking"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/9
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/191ec7ea-6ca7-4943-8709-f372ae5a81c7?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1905c9c28c13306a02269a143702ae631f6aad0a583e5b8832d5b0a92168104 · sha256:c54b9f33bdcd87a1… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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