ccfos Nightingale up to 9.1.1 SSRF Guard aiagent/tools/http.go isPublicIP server-side request forgery

Summaryinfo

A vulnerability classified as problematic was found in ccfos Nightingale up to 9.1.1. Affected by this vulnerability is the function isPublicIP of the file aiagent/tools/http.go of the component SSRF Guard. Executing a manipulation can lead to server-side request forgery. This vulnerability is registered as CVE-2026-85692. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in ccfos Nightingale up to 9.1.1. It has been declared as problematic. This vulnerability affects the function isPublicIP of the file aiagent/tools/http.go of the component SSRF Guard. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality. CVE summarizes:

Nightingale (n9e), as of commit 8362cbe (main branch, confirmed 2026-08-27), contains a server-side request forgery vulnerability in the isPublicIP function in aiagent/tools/http.go, the SSRF guard for the http_fetch AI-agent tool. The function only unwraps standard IPv4-mapped (::ffff:a.b.c.d) IPv6 addresses before checking them against the forbidden-range list, and does not classify 6to4 (2002::/16), NAT64 (64:ff9b::/96, 64:ff9b:1::/48), or deprecated site-local (fec0::/10) addresses. On a dual-stack or NAT64-enabled host, an attacker able to supply a URL to the http_fetch tool can bypass the guard by encoding a forbidden IPv4 address (such as the cloud instance-metadata endpoint 169.254.169.254) in one of these IPv6 forms to reach internal or metadata services.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-85692 since 09/04/2026. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation requires an enhanced level of successful authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/04/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• ccfos

Name

• Nightingale

Version

• 9.1.0
• 9.1.1

Website

• Product: https://github.com/ccfos/nightingale/

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