CVE-2026-1461

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{}

{"affected": [{"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "wordpress", "vendor": "wordpress"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.0.0,4.7.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Simple Membership", "source": "cna", "vendor": "wpinsider-1"}, "product": "simple_membership", "vendor": "wpinsider-1"}], "analysis": {"en": {"generated_at": "2026-04-15T18:09:11.041821+00:00", "value": {"mitigation_remediation": ["Apply the latest version of Simple Membership (4.7.1 or later) to eliminate the flaw.", "Configure a non\u2011empty stripe\u2011webhook\u2011signing\u2011secret in the plugin settings to enforce signature verification.", "Restrict the webhook endpoint to accept traffic only from Stripe\u2019s IP ranges or implement additional request validation before processing the webhook payload."], "summary": {"action": "Immediate Patch", "impact": "Unauthorized Management of Memberships"}, "threat_synthesis": {"affected_systems": "Affected systems include any WordPress site that has the Simple Membership plugin installed, with version numbers 4.7.0 or earlier. The issue resides in the Stripe webhook handler and related classes within the plugin. No information is available about specific installations beyond the plugin name and affected version range.", "description_and_impact": "The Simple Membership plugin for WordPress allows an unauthenticated attacker to forge Stripe webhook events because the plugin only verifies signatures when a stripe\u2011webhook\u2011signing\u2011secret is set, which is left empty by default. This improper handling of missing values enables manipulation of membership subscriptions, such as re\u2011activating expired memberships without payment or cancelling legitimate subscriptions. The consequence is unauthorized access to paid content and potential service disruption.", "risk_and_exploitability": "The vulnerability has a CVSS score of 6.5, indicating a moderate risk, and an EPSS score of less than 1\u202f%, suggesting a very low probability of exploitation at present. Based on the description, the likely attack vector is sending forged HTTP\u202fPOST requests to the plugin\u2019s Stripe webhook endpoint, bypassing signature verification due to an empty signing\u2011secret. The attack requires no authentication and therefore can be executed from anywhere. The fact that the issue is not listed in the CISA KEV catalog indicates that it has not yet been widely exploited in the wild."}}}}, "created": "2026-02-20T10:07:46.771328+00:00", "updated": "2026-04-15T18:15:10.838840+00:00", "vendors": ["wordpress", "wordpress$PRODUCT$wordpress", "wpinsider-1", "wpinsider-1$PRODUCT$simple_membership"]}