What’s Vulnerable › Vulnerabilities

CVE-2026-113596: Webstudio before 0.256.0 Information Disclosure via tRPC publishedBuilds and findManyByIds

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-20 · updated 2026-10-23
• Weakness: CWE-639

Description

Webstudio before 0.256.0 contains a missing authorization vulnerability that allows authenticated users to read other users' project data via the publishedBuilds and findManyByIds tRPC procedures. Attackers who know another user's project UUID can query the /trpc handler to retrieve publish history, titles, domains, preview images, and latest builds.

Affected products

• webstudio-is webstudio: before 0.256.0 — fixed in 0.256.0

How to fix

Upgrade to a fixed version: webstudio-is webstudio 0.256.0. Check the vendor advisory for mitigations.

References

• https://github.com/webstudio-is/webstudio/blob/0.255.0/packages/dashboard/src/db/projects.ts
• https://github.com/webstudio-is/webstudio/blob/0.255.0/packages/project/src/trpc/project-router.ts
• https://github.com/webstudio-is/webstudio/commit/348d049ed2763d2b6c3e00319fa9086ca67c8aa6
• https://github.com/webstudio-is/webstudio/issues/5621
• https://github.com/webstudio-is/webstudio/releases/tag/0.256.0
• https://www.vulncheck.com/advisories/webstudio-before-0.256.0-information-disclosure-via-trpc-publishedbuilds-and-findmanybyids

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