CVE-2026-48783
Postiz is an AI social media scheduling tool. Versions prior to 2.21.8 contained an unauthenticated endpoint that accepted a signed token and applied subscription-enforcement side effects to the organization referenced in that token's claims, without verifying the token's intended purpose. The endpoint, /public/modify-subscription, could not change the persisted subscription tier, but it did execute enforcement-related side effects on the caller's own organization, including adjusting team-member enablement state, disabling integrations exceeding the asserted plan's limits, and resetting the scheduled-post cron when the asserted plan was the free tier. Impact is limited to the attacker's own organization and cannot be redirected at other tenants through this endpoint. This issue has been fixed in version 2.21.8.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 4.8
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
- EPSS probability
- 0.17%
- CWE
- CWE-345, CWE-639, CWE-749, CWE-862
- Published
- 2026-06-16
- Last modified
- 2026-06-20
Affected products
- gitroomhq postiz-app
Weakness type
Related vulnerabilities
- CVE-2026-80172 — Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to...
- CVE-2026-73316 — XenForo < 2.3.13 Payment Replay via PayPal REST Payment Provider
- CVE-2026-85008 — undici vulnerable to caching and replay of unsafe HTTP method responses
- CVE-2026-85621 — LobeChat 2.2.1 Webhook Signature Verification Bypass QQ Feishu
- CVE-2026-85435 — MOOS-IvP through 24.8.1 uFldNodeBroker Unauthenticated Shore Route Enrollment
- CVE-2026-85434 — MOOS-IvP through 24.8.1 uFldShoreBroker Bridge Route Injection via Unverified Node Ping
- CVE-2026-85431 — MOOS essential-moos through 10.0.1 pMOOSBridge Unauthenticated UDP Packet Injection
- CVE-2026-85430 — MOOS essential-moos through 10.0.1 pShare Unauthenticated UDP Datagram Republishing