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.
Published: 2026-01-08
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Information disclosure via bearer token leakage across protocols
Action: Apply patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-8062-1 curl vulnerabilities
History

Tue, 20 Jan 2026 15:00:00 +0000

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

Fri, 09 Jan 2026 20:15:00 +0000

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 13:30:00 +0000

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

Thu, 08 Jan 2026 11:30:00 +0000

Type Values Removed Values Added
References

Thu, 08 Jan 2026 10:15:00 +0000

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

cve-icon MITRE

Status: PUBLISHED

Assigner: curl

Published:

Updated: 2026-04-02T13:20:16.344Z

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: 2026-04-27T21:45:14Z

Weaknesses