Low severity · published Sep 3, 2025
CVE-2025-9821
SSRF via webhook function
2.7
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mautic · Mautic
>= 4.4.0 through < 4.4.17; >= 5.0.0-alpha through < 5.2.8; >= 6.0.0-alpha through < 6.0.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9821
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9821
github.com
https://github.com/mautic/mautic/security/advisories/GHSA-hj6f-7hp7-xg69
More from Mautic
9.8
CVE-2018-8092
Mautic before 2.13.0 allows CSV injection
9.0
CVE-2025-13828
Mautic user without privileged access to the Marketplace can install and uninstall composer packages
9.0
CVE-2020-35129
Mautic before 3.2.4 is affected by stored XSS
8.8
CVE-2026-3105
SQL Injection in Contact Activity API Sorting
8.8
CVE-2025-13827
GrapesJsBuilder File Upload allows all file uploads