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

Quick assessment

Affected
useplunk plunk
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

plunk是Plunk开源的一个邮件发送与管理平台。 Plunk 0.7.0之前版本存在代码问题漏洞，该漏洞源于SNS webhook处理程序存在服务端请求伪造问题，可能导致未经验证的攻击者发起任意出站HTTP GET请求。

CVSS 9.3 · Critical EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-32096

Vulnerability Information
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Vulnerability Title
Plunk has SSRF via unvalidated AWS SNS SubscriptionConfirmation in POST /webhooks/sns
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
plunk 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
plunk是Plunk开源的一个邮件发送与管理平台。 Plunk 0.7.0之前版本存在代码问题漏洞，该漏洞源于SNS webhook处理程序存在服务端请求伪造问题，可能导致未经验证的攻击者发起任意出站HTTP GET请求。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
useplunk plunk < 0.7.0 -

II. Public POCs for CVE-2026-32096

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 12176 chars
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III. Intelligence Information for CVE-2026-32096

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Patches & Fixes for CVE-2026-32096 (1)

Vendor Advisories for CVE-2026-32096 (1)

IV. Related Vulnerabilities

Same product: plunk
Same vendor: useplunk
Same weakness: CWE-918

V. Comments for CVE-2026-32096

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