Critical 9.3Published Mar 11, 2026

CVE-2026-32096Plunk has SSRF via unvalidated AWS SNS SubscriptionConfirmation in POST /webhooks/sns

Updated under an hour ago (Oct 26, 2026, 5:10 AM ET)

Does this affect you?

It affects useplunk plunk. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for useplunk plunk

Exploited in the last 30 days

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.

CVSS: 9.3 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

useplunk plunk useplunk:plunk (from the name)	before 0.7.0	CNA record
useplunk plunk useplunk:plunk	before 0.7.0	NVD

References

https://github.com/useplunk/plunk/security/advisories/GHSA-xpqg-p8mp-7g44x-refsource-confirm, vendor-advisory
https://github.com/useplunk/plunk/commit/b8f1ad9ab53c78f8ef063fdc125f397c8bfc7652x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.