{"id":"CVE-2026-111255","revision":null,"records":[{"revision":"b0dd2362752b4345a0d131fe5454b329","observedAt":"2026-10-28T17:46:48.824+00:00","statement":{"source":"cve-program","id":"CVE-2026-111255","aliases":[],"title":"affiliate-toolkit <= 3.9.2 - Authenticated (Contributor+) Arbitrary File Upload via 'atkp_product_largeimageurl' Parameter","description":"The affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.9.2 via the upload_image function. This is due to insufficient file type validation in upload_image due to a weak Content-Type prefix check and extension derivation from the attacker-controlled URL path, with no dangerous-extension stripping. This makes it possible for authenticated attackers, with contributor-level access and above, to upload files that may be executable, which makes remote code execution possible. Exploitation requires the \"import product image\" option to be enabled in the plugin settings, as this activates the image download pipeline triggered on product post save.","state":0,"publishedAt":"2026-10-28T03:42:53.522+00:00","modifiedAt":"2026-10-28T16:10:48.081+00:00","affected":[{"ecosystem":"Vendor product","name":"affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"cservit\",\n                    \"product\": \"affiliate-toolkit – Multi-Network Affiliate & Amazon Product Display\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"3.9.2\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5,"severity":"HIGH"}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/272a8ee4-8689-4935-89c5-e2f502621511?source=cve","https://plugins.trac.wordpress.org/browser/affiliate-toolkit-starter/tags/3.9.2/includes/basics/ATKPTools.php#L657","https://plugins.trac.wordpress.org/browser/affiliate-toolkit-starter/tags/3.9.2/includes/basics/ATKPTools.php#L710","https://plugins.trac.wordpress.org/browser/affiliate-toolkit-starter/tags/3.9.2/includes/atkp_posttypes_product.php#L3192","https://plugins.trac.wordpress.org/browser/affiliate-toolkit-starter/tags/3.9.2/includes/dataservices/atkp_productservice.php#L775","https://plugins.trac.wordpress.org/browser/affiliate-toolkit-starter/tags/3.9.2/includes/basics/ATKPTools.php#L546","https://plugins.trac.wordpress.org/changeset?reponame=&old=3759575%40affiliate-toolkit-starter&new=3759575%40affiliate-toolkit-starter"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111255","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111255","identifiers":["CVE-2026-111255"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-31T03:47:09.5766450+00:00","complete":true,"records":1766,"lastAttemptAt":"2026-10-31T03:47:09.576645+00:00","lastSuccessAt":"2026-10-31T03:47:09.7314526+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.7314536+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-9266d7b009bf9c4a0ccdcb5cbdea7f905cb3c4d92fd3b41581ece16b2cfdc4e7-caecc587a0b75cf7beeacae1ff36f646a3aea789f7a0588a337b601f31e67ed5","complete":true,"records":417488,"lastAttemptAt":"2026-10-31T03:45:32.9429043+00:00","lastSuccessAt":"2026-10-31T03:45:32.9235987+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:45:32.9429043+00:00","snapshotPublishedAt":"2026-10-31T03:25:40+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-c5eb069e059248ab9c1b8cc754ce0885","complete":true,"records":13565,"lastAttemptAt":"2026-10-31T03:47:38.2106586+00:00","lastSuccessAt":"2026-10-31T03:47:38.206+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:38.206+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13637,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-31T03:47:09.5766450+00:00","complete":true,"records":1094,"lastAttemptAt":"2026-10-31T03:47:09.576645+00:00","lastSuccessAt":"2026-10-31T03:47:09.732237+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.7322372+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-388d7f08b33a4ea9a69648d0e90f07eb","complete":false,"records":13577,"lastAttemptAt":"2026-10-31T03:47:34.917396+00:00","lastSuccessAt":"2026-10-31T03:47:34.914+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:34.914+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13547,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-21dcd6662970dfea02e4ea60ee637115e8d92664947484d2b9276b3f6568a84f","complete":true,"records":9815,"lastAttemptAt":"2026-10-31T03:47:09.5192979+00:00","lastSuccessAt":"2026-10-30T23:47:34.1817587+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.5192979+00:00","snapshotPublishedAt":"2026-10-30T23:33:17+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-2de9ccc5290f060c7aa63f89c25dd76f655a64ba1aba7c05c97fa3bee4f09899","complete":true,"records":1967,"lastAttemptAt":"2026-10-31T03:45:32.9996003+00:00","lastSuccessAt":"2026-10-28T20:55:34.2982937+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:45:32.9996003+00:00","snapshotPublishedAt":"2026-10-28T20:03:08+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-f95f76cd406ae5bae3de632ad37fd2d5160b44f5e6b51748ac6f8f0c0c88e72b","complete":true,"records":3028,"lastAttemptAt":"2026-10-31T03:47:09.537336+00:00","lastSuccessAt":"2026-10-30T23:47:38.4914494+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.537336+00:00","snapshotPublishedAt":"2026-10-30T23:18:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-3ce2e3336768d0abd5b020f6f12bd5502a5deb02700e9d89d279597dce6e72ae","complete":true,"records":230992,"lastAttemptAt":"2026-10-31T03:47:09.3912134+00:00","lastSuccessAt":"2026-10-31T03:47:08.0119269+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.3912134+00:00","snapshotPublishedAt":"2026-10-31T03:03:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}