{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55518", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T22:44:22.284Z", "datePublished": "2026-07-17T20:51:19.056Z", "dateUpdated": "2026-07-17T20:51:19.056Z"}, "containers": {"cna": {"title": "Avo: Missing Authorization in Avo Association Attach Endpoint Allows Unauthorized Relationship Manipulation and Privilege Escalation", "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "lang": "en", "description": "CWE-639: Authorization Bypass Through User-Controlled Key", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/avo-hq/avo/security/advisories/GHSA-8fq9-273g-6mrg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/avo-hq/avo/security/advisories/GHSA-8fq9-273g-6mrg"}, {"name": "https://github.com/avo-hq/avo/pull/4568", "tags": ["x_refsource_MISC"], "url": "https://github.com/avo-hq/avo/pull/4568"}, {"name": "https://github.com/avo-hq/avo/commit/995928e586fd1788dd496bd51c4dbe4a79cb2b9c", "tags": ["x_refsource_MISC"], "url": "https://github.com/avo-hq/avo/commit/995928e586fd1788dd496bd51c4dbe4a79cb2b9c"}, {"name": "https://github.com/avo-hq/avo/releases/tag/v3.32.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/avo-hq/avo/releases/tag/v3.32.1"}], "affected": [{"vendor": "avo-hq", "product": "avo", "versions": [{"version": ">= 4.0.0.beta.1, < 4.0.0.beta.51", "status": "affected"}, {"version": "< 3.32.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-17T20:51:19.056Z"}, "descriptions": [{"lang": "en", "value": "Avo is a framework to create admin panels for Ruby on Rails apps. Prior to 3.32.1 and 4.0.0.beta.51, Avo's association attach workflow checks attach_<association>? in the UI and GET /resources/:resource/:id/:related/new path, but the actual write endpoint, POST /resources/:resource/:id/:related, does not run the same authorization check before mutating the association through Avo::AssociationsController#create. An authenticated low-privileged Avo user can bypass hidden or disabled attach controls and directly attach related records to a parent record by sending a crafted POST request, which can lead to privilege escalation and cross-tenant data exposure where associations represent authorization-bearing relationships. This issue is fixed in versions 3.32.1 and 4.0.0.beta.51."}], "source": {"advisory": "GHSA-8fq9-273g-6mrg", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[4.0.0.beta.1,4.0.0.beta.51)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.32.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "avo", "source": "cna", "vendor": "avo-hq"}, "product": "avo", "vendor": "avo_hq"}], "created": "2026-07-17T22:45:04.402850+00:00", "updated": "2026-07-17T22:45:04.402899+00:00", "vendors": ["avo_hq", "avo_hq$PRODUCT$avo"]}