CVE-2026-94266

libcurl could accidentally return a URL for `curl_easy_getinfo()`'s `CURLINFO_EFFECTIVE_URL` option containing credentials, even though neither the URL provided to libcurl nor the redirected URL did.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2026-94266.html
https://curl.se/docs/CVE-2026-94266.json
https://hackerone.com/reports/4041053
https://hackerone.com/reports/4041053

Configurations

No configuration.

History

30 Oct 2026, 17:17

Type	Values Removed	Values Added
References	~~() https://hackerone.com/reports/4041053 -~~	() https://hackerone.com/reports/4041053 -
CWE		CWE-522
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

20 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-20 21:17

Updated : 2026-10-30 17:17

NVD link : CVE-2026-94266

Mitre link : CVE-2026-94266

CVE.ORG link : CVE-2026-94266

JSON object : View

Products Affected

No product.

CWE

CWE-522

Insufficiently Protected Credentials

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"references": [{"url": "https://curl.se/docs/CVE-2026-94266.html", "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "https://curl.se/docs/CVE-2026-94266.json", "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "https://hackerone.com/reports/4041053", "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "https://hackerone.com/reports/4041053", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-522"}]}], "descriptions": [{"lang": "en", "value": "libcurl could accidentally return a URL for `curl_easy_getinfo()`'s\n`CURLINFO_EFFECTIVE_URL` option containing credentials, even though neither\nthe URL provided to libcurl nor the redirected URL did."}], "lastModified": "2026-10-30T17:17:31.937", "sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9"}