CVE-2026-53961

CVE-2026-53961 concerns Discourse, an open-source discussion platform. Prior to the fixed versions, the AWS SES bounce webhook at POST /webhooks/aws did not bind SNS-signed messages to trusted TopicArn values, enabling any AWS account holder to publish forged Bounce notifications that revoke a ta...

CVE-2026-53961 Discourse: Forged AWS SNS bounce notifications can disable a targeted user's email (missing TopicArn binding)

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, the AWS SES bounce webhook at POST /webhooks/aws verified that SNS messages were signed by Amazon but did not bind them to trusted TopicArn values, allowing any AWS account holder to publish...

VulnCheck KEV: CVE-2021-4104

JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in...