CVE-2025-9821

SSRF via webhook function

LOW
2.7
CVSS Score
Published: September 3, 2025 at 09:39 AM UTC
Updated: October 19, 2026 at 05:10 PM UTC
1 product affected across 1 vendorMautic

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Severity
LOW2.7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

SummaryUsers with webhook permissions can conduct SSRF via webhooks. If they have permission to view the webhook logs, the (partial) request response is also disclosed DetailsWhen sending webhooks, the destination is not validated, causing SSRF. ImpactBypass of firewalls to interact with internal services. See https://owasp.org/Top10/A10_2021-Server-Side_Request_Forgery_%28SSRF%29/  for more potential impact. Resources https://cheatsheetseries.owasp.org/cheatsheets/Server_Side_Request_Forgery_Prevention_Cheat_Sheet.html  for more information on SSRF and its fix.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

90%
>= 4.4.0 ≤ v ≤ < 4.4.17>= 5.0.0-alpha ≤ v ≤ < 5.2.8>= 6.0.0-alpha ≤ v ≤ < 6.0.5>= 4.4.0>= 5.0.0-alpha>= 6.0.0-alpha

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.7LOWMautic
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918

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