CVE-2026-32096
Plunk has SSRF via unvalidated AWS SNS SubscriptionConfirmation in POST /webhooks/sns
HIGH 8.6EPSS 0.4%
Plunk is an open-source email platform built on top of AWS SES. Prior to 0.7.0, a Server-Side Request Forgery (SSRF) vulnerability existed in the SNS webhook handler. An unauthenticated attacker could send a crafted request that caused the server to make an arbitrary outbound HTTP GET request to any host accessible from the server. This vulnerability is fixed in 0.7.0.
- Affected
- useplunk · plunk
- CVSS v3.1 NVD
- 8.6 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N - CVSS v3.1 GITHUB
- 9.3 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N - EPSS
- 0.45% chance of exploitation in the next 30 days, 37th percentile
- Published
- 2026-03-11
- Updated
- 2026-03-12
Proof-of-concept exploits (1)
- andrebhu/CVE-2026-320960★ · 2026-03-31
Security advisories
- useplunk/plunk/security/advisories/GHSA-xpqg-p8mp-7g44
- useplunk/plunk/commit/b8f1ad9ab53c78f8ef063fdc125f397c8bfc7652