CVE-2026-121557

MEDIUM 5.9

WPPConnect Server through 2.10.74 Missing Authentication via /api/:session/chatwoot

CVSS Score

5.9

EPSS Score

0.0%

EPSS Percentile

0th

WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.

CWE	CWE-306
Vendor	wppconnect
Product	wppconnect-server
Published	Nov 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

wppconnect / wppconnect-server

0 ≤ 2.10.74

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/wppconnect-team/wppconnect-server/issues/2701 github.com: https://github.com/wppconnect-team/wppconnect-server github.com: https://github.com/wppconnect-team/wppconnect-server/pull/2702 github.com: https://github.com/wppconnect-team/wppconnect-server/blob/v2.10.74/src/routes/index.ts#L963 github.com: https://github.com/wppconnect-team/wppconnect-server/blob/v2.10.74/src/controller/deviceController.ts#L2230-L2324 vulncheck.com: https://www.vulncheck.com/advisories/wppconnect-server-through-2.10.74-missing-authentication-via-api-session-chatwoot

Credits

hieuPenguinnn