{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-23T06:18:28.096","vulnerabilities":[{"cve":{"id":"CVE-2026-34590","sourceIdentifier":"security-advisories@github.com","published":"2026-04-02T18:16:30.670","lastModified":"2026-04-07T21:21:53.490","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Postiz is an AI social media scheduling tool. Prior to version 2.21.4, the POST /webhooks/ endpoint for creating webhooks uses WebhooksDto which validates the url field with only @IsUrl() (format check), missing the @IsSafeWebhookUrl validator that blocks internal/private network addresses. The update (PUT /webhooks/) and test (POST /webhooks/send) endpoints correctly apply @IsSafeWebhookUrl. When a post is published, the orchestrator fetches the stored webhook URL without runtime validation, enabling blind SSRF against internal services. This issue has been patched in version 2.21.4."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.5}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-918"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:gitroom:postiz:*:*:*:*:*:*:*:*","versionEndExcluding":"2.21.4","matchCriteriaId":"5C48A1C3-2954-480E-989E-4CE68EADAF4B"}]}]}],"references":[{"url":"https://github.com/gitroomhq/postiz-app/commit/5ae4c950db6aa516a31454b7a45b9480bca40a11","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.4","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-wc9c-7cv8-m225","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]}]}}]}