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CVE-2023-49799

7.5 · HIGH

`nuxt-api-party` is an open source module to proxy API requests.

Published Dec 9, 2023CWE-918EPSS 0.82%

Overview

CVE-2023-49799 is a high-severity vulnerability. It was published on December 9, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

`nuxt-api-party` is an open source module to proxy API requests. nuxt-api-party attempts to check if the user has passed an absolute URL to prevent the aforementioned attack. This has been recently changed to use the regular expression `^https?://`, however this regular expression can be bypassed by an absolute URL with leading whitespace. For example `\nhttps://whatever.com` which has a leading newline. According to the fetch specification, before a fetch is made the URL is normalized. "To normalize a byte sequence potentialValue, remove any leading and trailing HTTP whitespace bytes from potentialValue.". This means the final request will be normalized to `https://whatever.com` bypassing the check and nuxt-api-party will send a request outside of the whitelist. This could allow us to leak credentials or perform Server-Side Request Forgery (SSRF). This vulnerability has been addressed in version 0.22.1. Users are advised to upgrade. Users unable to upgrade should revert to the previou

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

Reffetch.spec.whatwg.org/Reffetch.spec.whatwg.org/#http-whitespace-byteGitHubgithub.com/johannschopplich/nuxt-api-party/blob/777462e1e3af1d9f8938aa33f230cd8cb6e0cc9a/src/runtime/server/handler.ts#L31GitHubgithub.com/johannschopplich/nuxt-api-party/security/advisories/GHSA-3wfp-253j-5jxvRefinfra.spec.whatwg.org/#byte-sequenceReffetch.spec.whatwg.org/Reffetch.spec.whatwg.org/#http-whitespace-byteGitHubgithub.com/johannschopplich/nuxt-api-party/blob/777462e1e3af1d9f8938aa33f230cd8cb6e0cc9a/src/runtime/server/handler.ts#L31GitHubgithub.com/johannschopplich/nuxt-api-party/security/advisories/GHSA-3wfp-253j-5jxvRefinfra.spec.whatwg.org/#byte-sequence

How CyberStrike helps

Frequently asked questions

What is CVE-2023-49799?

CVE-2023-49799 is a high-severity vulnerability. It was published on December 9, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-49799?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-49799?

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-2023-49799?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-49799 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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