{"id":"CVE-2026-3220","state":"PUBLISHED","title":"Multiple Plugins - Unauthenticated Stored XSS via Minify Library","description":"The Autoptimize WordPress plugin before 3.1.15, Clearfy Cache  WordPress plugin before 2.4.2, Speed Optimizer  WordPress plugin before 7.7.9 are vulnerable to unauthenticated Stored Cross-Site Scripting (XSS) due to a predictable replacement hash used during the HTML minification process and abusing a regular expression. This allows an attacker to inject arbitrary HTML attributes in the final HTML output by anticipating the placeholder format.","publishedAt":"2026-05-18T06:00:08.130Z","updatedAt":"2026-05-18T13:40:11.175Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown Autoptimize","Unknown Clearfy Cache","Unknown Speed Optimizer"],"affected":[{"vendor":"Unknown","product":"Autoptimize","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.1.15","versionType":"semver"}]},{"vendor":"Unknown","product":"Clearfy Cache","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.4.2","versionType":"semver"}]},{"vendor":"Unknown","product":"Speed Optimizer","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.7.9","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/3ceabf11-23cd-4c38-ba14-014348b0ff2d/"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/3xxx/CVE-2026-3220.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3220","state":"PUBLISHED","datePublished":"2026-05-18T06:00:08.130Z","dateUpdated":"2026-05-18T13:40:11.175Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-02-25T18:04:15.464Z"},"containers":{"cna":{"title":"Multiple Plugins - Unauthenticated Stored XSS via Minify Library","descriptions":[{"lang":"en","value":"The Autoptimize WordPress plugin before 3.1.15, Clearfy Cache  WordPress plugin before 2.4.2, Speed Optimizer  WordPress plugin before 7.7.9 are vulnerable to unauthenticated Stored Cross-Site Scripting (XSS) due to a predictable replacement hash used during the HTML minification process and abusing a regular expression. This allows an attacker to inject arbitrary HTML attributes in the final HTML output by anticipating the placeholder format."}],"affected":[{"vendor":"Unknown","product":"Autoptimize","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.1.15","versionType":"semver"}]},{"vendor":"Unknown","product":"Clearfy Cache","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.4.2","versionType":"semver"}]},{"vendor":"Unknown","product":"Speed Optimizer","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.7.9","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/3ceabf11-23cd-4c38-ba14-014348b0ff2d/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-79 Cross-Site Scripting (XSS)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-05-18T06:00:08.130Z"},"credits":[{"lang":"en","value":"Matthew Rollings","type":"finder"},{"lang":"en","value":"WPScan","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"WPScan CVE Generator"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":8.8,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-18T13:39:48.796728Z","id":"CVE-2026-3220","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","type":"CWE","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-18T13:40:11.175Z"}}]}}}