CVE-2026-33074

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From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, a user may be able to purchase a lower tier subscription but grant themselves the benefits that comes along with a higher tier subscription. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0."}, {"lang": "es", "value": "Discourse es una plataforma de discusi\u00f3n de c\u00f3digo abierto. Desde las versiones 2026.1.0-latest hasta antes de la 2026.1.3, 2026.2.0-latest hasta antes de la 2026.2.2, y 2026.3.0-latest hasta antes de la 2026.3.0, un usuario podr\u00eda adquirir una suscripci\u00f3n de nivel inferior pero otorgarse los beneficios que vienen con una suscripci\u00f3n de nivel superior. Este problema ha sido parcheado en las versiones 2026.1.3, 2026.2.2 y 2026.3.0."}], "id": "CVE-2026-33074", "lastModified": "2026-07-24T20:10:00.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33074", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-31T18:50:09.413946Z", "version": "2.0.3"}}]}, "published": "2026-03-31T18:16:51.963", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/discourse/discourse/commit/c34f2aac8dcd1ae2886fa84256f607bc003f9d80"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/discourse/discourse/security/advisories/GHSA-9vg5-mp49-xghh"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-285"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.1.0-latest,2026.1.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.2.0-latest,2026.2.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2026.3.0-latest,2026.3.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "discourse", "source": "cna", "vendor": "discourse"}, "product": "discourse", "vendor": "discourse"}], "analysis": {"en": {"generated_at": "2026-04-09T18:36:43.270684+00:00", "value": {"mitigation_remediation": ["Upgrade to Discourse 2026.1.3 or later", "Upgrade to Discourse 2026.2.2 or later", "Upgrade to Discourse 2026.3.0 or later", "Update the discourse\u2011subscriptions plugin to a version that includes the fix", "Verify that users cannot modify their subscription tier through the user interface", "Review application logs for attempts to self\u2011grant higher\u2011tier privileges"], "summary": {"action": "Apply patch", "impact": "Privilege escalation via subscription self\u2011grant"}, "threat_synthesis": {"affected_systems": "Installations of the Discourse forum platform that employ the default discourse\u2011subscriptions plugin and run versions 2026.1.0\u2011latest up to, but not including, 2026.1.3, 2026.2.0\u2011latest up to, but not including, 2026.2.2, or 2026.3.0\u2011latest up to, but not including, 2026.3.0 are affected. All releases from 2026.1.3 onward and from 2026.2.2 onward and from 2026.3.0 onward are not vulnerable.", "description_and_impact": "Discourse users can purchase a lower\u2011tier subscription but exploit a flaw in the discourse\u2011subscriptions plugin to grant themselves the privileges of a higher tier without payment. The vulnerability allows an authenticated user to increase their access level within the application, effectively bypassing the intended tiered access controls. The underlying weakness is a privilege escalation and rights misuse issue.", "risk_and_exploitability": "The medium severity CVSS score of 6.3 reflects the impact of unauthorized privilege escalation. The EPSS score indicates a very low likelihood of exploitation, and the vulnerability is not registered in the CISA KEV catalog. The most likely attack path is a web\u2011based interaction with the subscription management interface performed by an authenticated user. The flaw is confined to application\u2011level privileges and does not enable system\u2011wide access or direct data exfiltration."}}}}, "created": "2026-03-31T19:53:38.204908+00:00", "updated": "2026-04-10T09:46:02.146588+00:00", "vendors": ["discourse", "discourse$PRODUCT$discourse"]}