How severe is CVE-2026-44797?

CVE-2026-44797 has a CVSS score of 8.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2026-44797?

CVE-2026-44797 affects the following packages: nautobot (PyPI), nautobot (PyPI). Ecosystems affected: PyPI.

How do I fix CVE-2026-44797?

Update nautobot to 3.1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-44797 is resolved across your whole dependency graph.

How do I detect CVE-2026-44797 in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nautobot, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-44797 if there is no patch (or I can't update yet)?

Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Is CVE-2026-44797 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-44797 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-44797?

CVE-2026-44797 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 15th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-44797?

CVE-2026-44797 is classified as Server-Side Request Forgery (SSRF) (CWE-918). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2026-44797 published, and has it been updated?

CVE-2026-44797 was published on May 28, 2026 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍

🐍 PyPI

Not in CISA KEV

HIGH severity

CVE-2026-44797 — nautobot

HIGHFix: nautobot/nautobot@16aa4aa

CVE-2026-44797 is a high-severity (CVSS 8.5) Server-Side Request Forgery (SSRF) vulnerability in nautobot. A fix is available for nautobot — see the affected versions and patch details below.

Nautobot: Webhook definitions could be used for server-side request forgery (SSRF)

Also known asGHSA-c35q-vxrp-ph26PYSEC-2026-2227

Published

May 28, 2026

Updated

Oct 28, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-44797.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs15th percentile — riskier than 15% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected

🐍nautobot🐍nautobot

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Nautobot's Webhook data model and associated feature set could be configured by users with sufficient access to perform requests to various hosts and IP addresses that should not be permitted, allowing for various behaviors similar to server-side request forgery (SSRF).

Patches

Fixes are available in Nautobot v2.4.33 and v3.1.2.

In support of this fix, three new settings variables have been added to Nautobot:

WEBHOOK_ALLOWED_SCHEMES - By default new or updated Webhook records will be restricted to HTTP or HTTPS only, disallowing other schemes that may have been previously allowed. Administrators should audit existing Webhook records to identify any that are invalid, and either update/delete said records or customize WEBHOOK_ALLOWED_SCHEMES as appropriate.
WEBHOOK_ADDITIONAL_BLOCKED_NETWORKS - This can be used to specify additional IP networks that should be denied to Webhook sending, for example some deployments may wish to disallow RFC1918 addresses or even disallow all networks and carve out specific exemptions using the following setting.
WEBHOOK_ALLOWED_HOSTS - This can be used to provide an allow-list of specific hosts that would otherwise be blocked by any WEBHOOK_ADDITIONAL_BLOCKED_NETWORKS configuration.

Workarounds

Administrators should review which users have been granted add or change permissions for the Webhook data model, and should review currently defined Webhook records for safety and validity. Other than that, no specific workaround has been identified.

References

2.4.33 (<a href="https://github.com/nautobot/nautobot/commit/16aa4aa9796ab7a31c4d615ec945e1f16d8c77c4">patch</a>)
3.1.2 (<a href="https://github.com/nautobot/nautobot/commit/7324c8f0d8c7245fbc691e15d729adc2d2707d08">patch</a>)

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`nautobot`	≥ 3.0.0a2&&< 3.1.2	3.1.2`pip install --upgrade 'nautobot==3.1.2'`
🐍PyPI	`nautobot`	all versions	2.4.33`pip install --upgrade 'nautobot==2.4.33'`

Affected Products

1 product · 2 configurations

Application

nautobotnetworktocode

≥ 3.0.0 && < 3.1.2

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nautobot, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update nautobot to 3.1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-44797 is resolved across your whole dependency graph.
Workarounds
Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Frequently Asked Questions

### Impact Nautobot's `Webhook` data model and associated feature set could be configured by users with sufficient access to perform requests to various hosts and IP addresses that should not be permitted, allowing for various behaviors similar to server-side request forgery (SSRF). ### Patches Fixes are available in Nautobot v2.4.33 and v3.1.2. In support of this fix, three new settings variables have been added to Nautobot: - `WEBHOOK_ALLOWED_SCHEMES` - By default new or updated `Webhook` records will be restricted to HTTP or HTTPS only, disallowing other schemes that may have been prev