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TI-2026-24634 Aliases CVE-2026-32096

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

Priority MEDIUM 46CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00314 24th percentileScored 2026-11-07
Fix Fixed plunk (useplunk): 0.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
useplunkplunkbefore 0.7.00.7.0Patch availableCNA
  • plunk Vendoruseplunk Affected before 0.7.0 Fixed in 0.7.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:useplunk:plunk:*:*:*:*:*:*:*:*before 0.7.0Vulnerableuseplunk
  • cpe:2.3:a:useplunk:plunk:*:*:*:*:*:*:*:* Versions before 0.7.0 Vulnerable ·useplunk

Remediation

  • Fix · CNA plunk (useplunk) Fixed in 0.7.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32096

References

Patch 1

Advisory 1

  • TI-2026-27197 Plunk has a CRLF Email Header Injection in raw MIME message construction allows… CVSS 3.1HIGH 8.5
  • TI-2026-24633 Plunk has Stored Cross-Site Scripting (XSS) via SVG File Upload CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences