What’s Vulnerable › Vulnerabilities

CVE-2026-111755: follow-redirects sensitiveHeaders regex escaping can expose credential headers

• Severity: high (CVSS 8.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-19 · updated 2026-10-19
• Weakness: CWE-185

Description

follow-redirects is a Node.js HTTP and HTTPS client wrapper that automatically follows redirects. From 1.16.0 until 1.16.1, escapeRegex leaves valid header-name metacharacters unescaped in sensitiveHeaders. When an application declares a sensitive header whose name contains ^ or | and follows a cross-origin or HTTPS-to-HTTP redirect, unescaped regular-expression metacharacters prevent the generated filter from matching the declared header name, and the credential header is forwarded to an attacker-controlled redirect target. This issue is fixed in version 1.16.1.

Affected products

• follow-redirects: from 1.16.0, < 1.16.1

References

• https://github.com/follow-redirects/follow-redirects/commit/080a76d0e125b37bf81717368a61d5dc37aa56c8
• https://github.com/follow-redirects/follow-redirects/releases/tag/v1.16.1
• https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-8r9p-f939-6h3c
• https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-8r9p-f939-6h3c

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