CVE-2026-113596

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 v3 3.1 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

20 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-20 16:17

Updated : 2026-10-23 02:16

NVD link : CVE-2026-113596

Mitre link : CVE-2026-113596

CVE.ORG link : CVE-2026-113596

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

{"id": "CVE-2026-113596", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-113596", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-23T01:43:46.570337Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.1, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 1.6}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"repo": "https://github.com/webstudio-is/webstudio", "vendor": "webstudio-is", "product": "webstudio", "versions": [{"status": "affected", "version": "0", "lessThan": "0.256.0", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-20T16:17:08.340", "references": [{"url": "https://github.com/webstudio-is/webstudio/blob/0.255.0/packages/dashboard/src/db/projects.ts", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/webstudio-is/webstudio/blob/0.255.0/packages/project/src/trpc/project-router.ts", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/webstudio-is/webstudio/commit/348d049ed2763d2b6c3e00319fa9086ca67c8aa6", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/webstudio-is/webstudio/issues/5621", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/webstudio-is/webstudio/releases/tag/0.256.0", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/webstudio-before-0.256.0-information-disclosure-via-trpc-publishedbuilds-and-findmanybyids", "source": "disclosure@vulncheck.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-10-23T02:16:55.313", "sourceIdentifier": "disclosure@vulncheck.com"}