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Vulnerabilities

Vulnerability · CVE-2025-9821

SummaryUsers with webhook permissions can conduct SSRF via webhooks.

Published Sep 3, 2025 · catalog updated Oct 19, 2026 · Mautic Mautic

Last checked Oct 23, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-9821. EPSS is 0.30%. Act only if a listed version of Mautic Mautic is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low2.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.30%
Remediation
Version ranges on file
Affected products
vendor Mautic Mautic 4.4.0 ≤< 4.4.17

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Mautic Mautic 4.4.0 ≤< 4.4.174.4.0 ≤< 4.4.17

How to fix CVE-2025-9821

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-9821. EPSS is 0.30%. Act only if a listed version of Mautic Mautic is installed.

Which versions are affected?

Compare what you have installed with Mautic Mautic 4.4.0 ≤< 4.4.17 4.4.0 ≤< 4.4.17. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-918: Server-Side Request Forgery (SSRF). EPSS 0.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 3, 2025 · NIST NVD

    Detected

    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 potent

  2. Oct 19, 2026 · NIST NVD

    Updated

    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 potent

Sources

  • CVE.orgVulnerability recordCVE-2025-9821

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-9821

    30-day exploitation probability 0.30%

    first.org
  • EUVDVulnerability recordEUVD-2025-26495

    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 inter

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-2025-9821

    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 in

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • EUVDOct 22, 2026
  • CVE.orgOct 21, 2026
  • NIST NVDOct 19, 2026