CVE-2026-40895

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Source
https://cve.org/CVERecord?id=CVE-2026-40895
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40895.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40895
Aliases
Downstream
Published
2026-04-21T19:59:59.759Z
Modified
2026-07-10T04:03:02.730016593Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
follow-redirects: Custom Authentication Headers Leaked to Cross-Domain Redirect Targets
Details

follow-redirects is an open source, drop-in replacement for Node's http and https modules that automatically follows redirects. Prior to 1.16.0, when an HTTP request follows a cross-domain redirect (301/302/307/308), follow-redirects only strips authorization, proxy-authorization, and cookie headers (matched by regex at index.js). Any custom authentication header (e.g., X-API-Key, X-Auth-Token, Api-Key, Token) is forwarded verbatim to the redirect target. This vulnerability is fixed in 1.16.0.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40895.json",
    "cwe_ids": [
        "CWE-200"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/follow-redirects/follow-redirects

Affected ranges

Type
GIT
Repo
https://github.com/follow-redirects/follow-redirects
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0c23a223067201c368035e82954c11eb2578a33b
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:follow-redirects_project:follow-redirects:*:*:*:*:*:node.js:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.16.0"
        }
    ]
}

Affected versions

v0.*
v0.0.6
v0.1.0
v0.2.0
v0.3.0
v1.*
v1.0.0
v1.1.0
v1.10.0
v1.11.0
v1.12.0
v1.12.1
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.14.0
v1.14.1
v1.14.2
v1.14.3
v1.14.4
v1.14.5
v1.14.6
v1.14.7
v1.14.8
v1.14.9
v1.15.0
v1.15.1
v1.15.10
v1.15.11
v1.15.2
v1.15.3
v1.15.4
v1.15.5
v1.15.6
v1.15.7
v1.15.8
v1.15.9
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.2.6
v1.3.0
v1.4.0
v1.4.1
v1.5.0
v1.5.1
v1.5.10
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.5.6
v1.5.7
v1.5.8
v1.5.9
v1.6.0
v1.6.1
v1.7.0
v1.8.0
v1.8.1
v1.9.0
v1.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40895.json"