CVE-2026-44797Network attack vector

Authenticated SSRF via unrestricted webhook destinations

Published May 28, 2026 · Updated May 28, 2026

SSRF in Nautobot before 2.4.33 and 3.0.0a2 through 3.1.1 allows remote authenticated users to send webhook requests to restricted hosts. The Webhook payload URL accepted unsafe schemes and destinations, while the Celery sender made requests without blocking loopback, link-local, reserved, multicast, or DNS-resolved restricted addresses. Webhook add or change permission is required, and successful requests can reach internal services or cloud metadata endpoints from the server.

CVSS severity8.5
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Nautobot before 2.4.33 and 3.0.0a2 through 3.1.1 allows remote authenticated users to send webhook requests to restricted hosts. The Webhook payload URL accepted unsafe schemes and destinations, while the Celery sender made requests without blocking loopback, link-local, reserved, multicast, or DNS-resolved restricted addresses. Webhook add or change permission is required, and successful requests can reach internal services or cloud metadata endpoints from the server.

The record

CVE
CVE-2026-44797
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Network to Code
Product
Nautobot
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.4.33
  2. Affected versionversion=>= 3.0.0a2, < 3.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Network to Code · Nautobotversion=< 2.4.33; version=>= 3.0.0a2, < 3.1.2

Published CVSS scores

8.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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