When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer
performs a cross-protocol redirect to a second URL that uses an IMAP, LDAP,
POP3 or SMTP scheme, curl might wrongly pass on the bearer token to the new
target host.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00021.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Curl Subscribe
Curl Subscribe
Haxx Subscribe
Curl Subscribe

Configuration 1 [-]

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Curl Subscribe
Curl Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://www.openwall.com/lists/oss-security/2026/01/07/4 cve-icon
https://curl.se/docs/CVE-2025-14524.html cve-icon cve-icon
https://curl.se/docs/CVE-2025-14524.json cve-icon cve-icon
https://hackerone.com/reports/3459417 cve-icon cve-icon
History

Wed, 21 Jan 2026 00:00:00 +0900

Type Values Removed Values Added
First Time appeared Haxx
Haxx curl
Weaknesses CWE-601
CPEs cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
Vendors & Products Haxx
Haxx curl

Sat, 10 Jan 2026 05:15:00 +0900

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 09 Jan 2026 22:30:00 +0900

Type Values Removed Values Added
First Time appeared Curl
Curl curl
Vendors & Products Curl
Curl curl

Thu, 08 Jan 2026 20:30:00 +0900

Type Values Removed Values Added
References

Thu, 08 Jan 2026 19:15:00 +0900

Type Values Removed Values Added
Description When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a cross-protocol redirect to a second URL that uses an IMAP, LDAP, POP3 or SMTP scheme, curl might wrongly pass on the bearer token to the new target host.
Title bearer token leak on cross-protocol redirect
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: curl

Published:

Updated: 2026-01-09T19:25:30.460Z

Reserved: 2025-12-11T08:04:14.328Z

Link: CVE-2025-14524

cve-icon Vulnrichment

Updated: 2026-01-08T11:06:18.117Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-08T10:15:46.607

Modified: 2026-01-20T14:53:11.017

Link: CVE-2025-14524

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-09T22:25:25Z

Weaknesses