Low severity · published Oct 20, 2026
CVE-2026-113596
Webstudio before 0.256.0 Information Disclosure via tRPC publishedBuilds and findManyByIds
3.1
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
webstudio · webstudio-is
before 0.256.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-113596
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-113596
github.com
https://github.com/webstudio-is/webstudio/blob/0.255.0/packages/dashboard/src/db/projects.ts
github.com
https://github.com/webstudio-is/webstudio/blob/0.255.0/packages/project/src/trpc/project-router.ts
github.com
https://github.com/webstudio-is/webstudio/commit/348d049ed2763d2b6c3e00319fa9086ca67c8aa6
github.com
https://github.com/webstudio-is/webstudio/issues/5621
github.com
https://github.com/webstudio-is/webstudio/releases/tag/0.256.0
www.vulncheck.com
https://www.vulncheck.com/advisories/webstudio-before-0.256.0-information-disclosure-via-trpc-publishedbuilds-and-findmanybyids
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