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CVE-2026-77066

5.0 · MEDIUM

The scanFeedsResolver in packages/api/src/resolvers/subscriptions/index.ts passes the caller-supplied url straight to axios.get(url, rssParserConfig()) with no address validation.

Published Aug 20, 2026CWE-918EPSS 0.25%

Overview

CVE-2026-77066 is a medium-severity vulnerability. It was published on August 20, 2026 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The scanFeedsResolver in packages/api/src/resolvers/subscriptions/index.ts passes the caller-supplied url straight to axios.get(url, rssParserConfig()) with no address validation. The same file guards the subscribe path with validateUrl(), which rejects private and reserved ranges through the private-ip library, and createPageSaveRequest applies the same check, so the omission is specific to this resolver. An authenticated user can direct the server to request arbitrary internal endpoints. The response is parsed as a feed or as HTML and the resolver returns the resulting url, title, description and type fields, so disclosure is limited to feed-shaped metadata and to link elements advertising RSS or Atom feeds; requests that do not parse still distinguish reachable ports from unreachable ones through the resulting error.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/omnivore-app/omnivoreGitHubgithub.com/omnivore-app/omnivore/blob/0d66408746788e07cec43928581b2567308ab575/packages/api/src/resolvers/subscriptions/index.ts#L445GitHubgithub.com/omnivore-app/omnivore/commit/c4d7d8562e6b9aabb1d8e4dabca268e314baa43aGitHubgithub.com/omnivore-app/omnivore/issues/4647Refwww.vulncheck.com/advisories/omnivore-server-side-request-forgery-via-the-scanfeeds-graphql-queryGitHubgithub.com/omnivore-app/omnivore/issues/4647

How CyberStrike helps

Frequently asked questions

What is CVE-2026-77066?

CVE-2026-77066 is a medium-severity vulnerability. It was published on August 20, 2026 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

How severe is CVE-2026-77066?

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-77066?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-77066?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-77066 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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