CVE-2026-42193

9.1 Critique

Publiée le 09/05/2026 à 00:16 · Modifiée le 17/06/2026 à 12:47 · Analyse NVD reportée · Source : security-advisories@github.com

Description

Plunk is an open-source email platform built on top of AWS SES. Prior to version 0.9.0, the /webhooks/sns endpoint accepts Amazon SNS notification payloads from unauthenticated requests without verifying the SNS signature, certificate, or topic ARN, meaning anyone can forge a valid-looking webhook request. This allows an unauthenticated attacker to spoof SNS events to trigger workflow automations, unsubscribe contacts, manipulate email delivery metrics, and potentially exhaust billing credits. This issue has been patched in version 0.9.0.

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Produits concernés

useplunk plunk

Scores CVSS

Version	Score	Source	Vecteur
3.1	9.1 Critique	security-advisories@github.com	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H`

Faiblesses (CWE)

CWE-347

Références

https://github.com/useplunk/plunk/releases/tag/v0.9.0
https://github.com/useplunk/plunk/security/advisories/GHSA-9792-w86v-gx53

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories