QSearchQSearch

CVE-2026-42556

8.9 HIGH

Postiz is an AI social media scheduling tool

Published: 2026-05-08 · Last updated: 2026-05-18

Severity and scoring

CVSS
8.9 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
CWE
CWE-79

Affected products

VendorProduct
gitroompostiz

Description

Postiz is an AI social media scheduling tool. From version 2.21.6 to before version 2.21.7, any authenticated user who can create a post can store arbitrary HTML in post content by tampering their own save request and send the public preview link /p/<postId>?share=true to another user. The preview page renders that stored HTML with dangerouslySetInnerHTML on the main application origin. This issue has been patched in version 2.21.7.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-42298 — Postiz is an AI social media scheduling tool (10.0 CRITICAL)

Same CWE

  • CVE-2026-9125 — The Presto Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'link_url' parameter of the [presto_player_ov... (6.4 MEDIUM)
  • CVE-2026-42653 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in iova.Mihai SliceWP allows Stored XSS (7.1 HIGH)
  • CVE-2026-46489 — SolidInvoice is an open-source invoicing platform (8.1 HIGH)
  • CVE-2026-8589 — GitLab has remediated an issue in GitLab EE affecting all versions from 13.1.4 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0... (7.3 HIGH)
  • CVE-2026-10087 — GitLab has remediated an issue in GitLab EE affecting all versions from 17.1 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2... (8.7 HIGH)