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vuln-nvd/data/2026/CVE-2026-4351.json
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{"affected":[{"affectedData":[{"defaultStatus":"unaffected","product":"Perfmatters","vendor":"perfmatters","versions":[{"lessThanOrEqual":"2.5.9","status":"affected","version":"0","versionType":"semver"}]}],"source":"security@wordfence.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"The Perfmatters plugin for WordPress is vulnerable to arbitrary file overwrite via path traversal in all versions up to, and including, 2.5.9. This is due to the `PMCS::action_handler()` method processing the bulk action `activate`/`deactivate` handlers without any authorization check or nonce verification. The `$_GET['snippets'][]` values are passed unsanitized to `Snippet::activate()`/`Snippet::deactivate()` which call `Snippet::update()` then `file_put_contents()` with the traversed path. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite arbitrary files on the server with a fixed PHP docblock content, potentially causing denial of service by corrupting critical files like `.htaccess` or `index.php`."}],"id":"CVE-2026-4351","lastModified":"2026-06-17T10:56:27.667","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"exploitabilityScore":2.8,"impactScore":5.2,"source":"security@wordfence.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-4351","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-04-10T15:51:30.180464Z","version":"2.0.3"}}]},"published":"2026-04-10T02:16:03.553","references":[{"source":"security@wordfence.com","url":"https://perfmatters.io/docs/changelog/"},{"source":"security@wordfence.com","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/c172ab2b-ce1f-4a0d-b31f-b75ff2f03506?source=cve"}],"sourceIdentifier":"security@wordfence.com","vulnStatus":"Deferred","weaknesses":[{"description":[{"lang":"en","value":"CWE-22"}],"source":"security@wordfence.com","type":"Secondary"}]}