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CVE-2026-48781

Postiz is an AI social media scheduling tool. In versions prior to 2.21.8, the Skool integration callback signed an attacker-controlled JSON blob into a session-shape JWT using the application's JWT_SECRET, and the auth middleware trusted every claim in that JWT without re-resolving the user from the database. Any authenticated Postiz user could forge a SUPERADMIN session and impersonate arbitrary organizations. This allowed Full Access to the following: all parts of Postiz, including users regi
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0a68387e6da35132799bd4531ad763fa91d3f91763bbaa131f6f8099493b1fcb
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-302","description":"CWE-302: Authentication Bypass by Assumed-Immutable Data","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-345","description":"CWE-345: Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/problemTypes/2/descriptions/0

Affected products and versions

1 source assertion
{"product":"postiz-app","vendor":"gitroomhq","versions":[{"status":"affected","version":"< 2.21.8"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-302","description":"CWE-302: Authentication Bypass by Assumed-Immutable Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-345","description":"CWE-345: Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/problemTypes/2/descriptions/0

Source references

4 source assertions
{"name":"http://github.com/gitroomhq/postiz-app/releases/tag/v2.21.8","tags":["x_refsource_MISC"],"url":"http://github.com/gitroomhq/postiz-app/releases/tag/v2.21.8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/references/3
{"name":"https://gadvisory.org/advisories/PSA-2026-2CAQ96","tags":["x_refsource_MISC"],"url":"https://gadvisory.org/advisories/PSA-2026-2CAQ96"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/references/2
{"name":"https://github.com/gitroomhq/postiz-app/commit/23696d2973510ae1f3f48bfa41a6bfbbf9827b05","tags":["x_refsource_MISC"],"url":"https://github.com/gitroomhq/postiz-app/commit/23696d2973510ae1f3f48bfa41a6bfbbf9827b05"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /containers/cna/references/1
{"name":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-j77w-h625-56q2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-j77w-h625-56q2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5dd9c9782a154962524a4d615558f7a8f243330becfe32035198c00df9c69b2b · sha256:8755b94ca43fa674… · /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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