What is the CVSS score of CVE-2023-26159?

CVE-2023-26159 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L. EPSS exploitation probability: 0.1%.

Which versions of Follow Redirects are affected by CVE-2023-26159?

CVE-2023-26159 presents moderate security risk, a input validation vulnerability rated CVSS 7.3. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2023-26159?

Yes, a public proof-of-concept exploit is available for CVE-2023-26159. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2023-26159?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Follow Redirects CVE-2023-26159

HIGH

Improper Input Validation (CWE-20)

2024-01-02 report@snyk.io

Information Disclosure Follow Redirects

7.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.3 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:33 vuln.today

Patch released

Mar 28, 2026 - 19:33 nvd

Patch available

PoC Detected

Nov 03, 2025 - 22:16 vuln.today

Public exploit code

CVE Published

Jan 02, 2024 - 05:15 nvd

HIGH 7.3

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

18 npm packages depend on follow-redirects (8 direct, 10 indirect)

Ecosystem-wide dependent count for version 1.15.4.

DescriptionCVE.org

Versions of the package follow-redirects before 1.15.4 are vulnerable to Improper Input Validation due to the improper handling of URLs by the url.parse() function. When new URL() throws an error, it can be manipulated to misinterpret the hostname. An attacker could exploit this weakness to redirect traffic to a malicious site, potentially leading to information disclosure, phishing attacks, or other security breaches.

AnalysisAI

Versions of the package follow-redirects before 1.15.4 are vulnerable to Improper Input Validation due to the improper handling of URLs by the url.parse() function. Rated high severity (CVSS 7.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-20. Versions of the package follow-redirects before 1.15.4 are vulnerable to Improper Input Validation due to the improper handling of URLs by the url.parse() function. When new URL() throws an error, it can be manipulated to misinterpret the hostname. An attacker could exploit this weakness to redirect traffic to a malicious site, potentially leading to information disclosure, phishing attacks, or other security breaches. Affected products include: Follow-Redirects Follow Redirects. Version information: before 1.15.4.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.