anchore quill up to 0.7.0 API server-side request forgery

Summaryinfo

A vulnerability has been found in anchore quill up to 0.7.0 and classified as critical. Affected by this issue is some unknown functionality of the component API. The manipulation leads to server-side request forgery. This vulnerability is traded as CVE-2026-31959. Access to the local network is required for this attack to succeed. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in anchore quill up to 0.7.0. It has been rated as critical. This issue affects an unknown part of the component API. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Quill provides simple mac binary signing and notarization from any platform. Quill before version v0.7.1 contains a Server-Side Request Forgery (SSRF) vulnerability when attempting to fetch the Apple notarization submission logs. Exploitation requires the ability to modify API responses from Apple's notarization service, which is not possible under standard network conditions due to HTTPS with proper TLS certificate validation; however, environments with TLS-intercepting proxies (common in corporate networks), compromised certificate authorities, or other trust boundary violations are at risk. When retrieving submission logs, Quill fetches a URL provided in the API response without validating that the scheme is https or that the host does not point to a local or multicast IP address. An attacker who can tamper with the response can supply an arbitrary URL, causing the Quill client to issue HTTP or HTTPS requests to attacker-controlled or internal network destinations. This could lead to exfiltration of sensitive data such as cloud provider credentials or internal service responses. Both the Quill CLI and library are affected when used to retrieve notarization submission logs. This vulnerability is fixed in 0.7.1.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-31959 since 03/10/2026. The exploitation is known to be difficult. The attack needs to be done within the local network. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 0.7.1 eliminates this vulnerability.

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Productinfo

Vendor

• anchore

Name

• quill

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7.0

Website

• Product: https://github.com/anchore/quill/

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