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CVE-2026-34590

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, en
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9ecf460ca4447eea51c14aad37e90952bca14d6d89635836bfc9d059446e726a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"postiz-app","vendor":"gitroomhq","versions":[{"status":"affected","version":"< 2.21.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cc274f34240f9709f818df2f8ccc6db4e200d2fcb1b7f4cbe6022e31c16fa0f5 · sha256:a8f6817533c52241… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cc274f34240f9709f818df2f8ccc6db4e200d2fcb1b7f4cbe6022e31c16fa0f5 · sha256:a8f6817533c52241… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cc274f34240f9709f818df2f8ccc6db4e200d2fcb1b7f4cbe6022e31c16fa0f5 · sha256:a8f6817533c52241… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/gitroomhq/postiz-app/commit/5ae4c950db6aa516a31454b7a45b9480bca40a11","tags":["x_refsource_MISC"],"url":"https://github.com/gitroomhq/postiz-app/commit/5ae4c950db6aa516a31454b7a45b9480bca40a11"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cc274f34240f9709f818df2f8ccc6db4e200d2fcb1b7f4cbe6022e31c16fa0f5 · sha256:a8f6817533c52241… · /containers/cna/references/1
{"name":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.4","tags":["x_refsource_MISC"],"url":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cc274f34240f9709f818df2f8ccc6db4e200d2fcb1b7f4cbe6022e31c16fa0f5 · sha256:a8f6817533c52241… · /containers/cna/references/2
{"name":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-wc9c-7cv8-m225","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-wc9c-7cv8-m225"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cc274f34240f9709f818df2f8ccc6db4e200d2fcb1b7f4cbe6022e31c16fa0f5 · sha256:a8f6817533c52241… · /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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