CVE-2026-32096

Plunk has SSRF via unvalidated AWS SNS SubscriptionConfirmation in POST /webhooks/sns

HIGH
8.6
CVSS Score
Published: March 11, 2026 at 07:53 PM UTC
Updated: June 17, 2026 at 10:35 AM UTC
1 product affected across 1 vendorPlunk

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Severity
HIGH8.6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.7.0
Affected range stops below 0.7.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-918

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