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CVE-2026-48799

Postiz is an AI social media scheduling tool. Prior to 2.21.8, Postiz fails to verify Nowpayments IPN callback authenticity against the payment provider shared secret and reads the target subscription identifier from the untrusted request body, allowing a low-privileged account to grant arbitrary organizations lifetime PRO subscriptions without payment. This issue is fixed in version 2.21.8.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:11ea78be1d8d7ce47cc1d2a078a215ee90163ce0715bb0878a0893a0d6954e96
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /containers/cna/problemTypes/1/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:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /containers/cna/problemTypes/0/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:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /containers/cna/problemTypes/1/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:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://gadvisory.org/advisories/PSA-2026-Q3TCPK","tags":["x_refsource_MISC"],"url":"https://gadvisory.org/advisories/PSA-2026-Q3TCPK"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /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:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /containers/cna/references/1
{"name":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.8","tags":["x_refsource_MISC"],"url":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /containers/cna/references/3
{"name":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-j7rp-5mgj-qgg9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-j7rp-5mgj-qgg9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a03e711b88ae9063de753cda6d0ad433d6db33a8fa4c7128f039015d21c18ad · sha256:7a46215ee72ca73c… · /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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