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CVE-2025-14524

Good to know:

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Date: January 8, 2026

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.

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2025-14524
https://curl.se/docs/CVE-2025-14524.html
https://curl.se/docs/CVE-2025-14524.json
https://hackerone.com/reports/3459417
http://www.openwall.com/lists/oss-security/2026/01/07/4
https://www.mend.io/vulnerability-database/CVE-2025-14524

Severity Score

Weakness Type (CWE)

URL Redirection to Untrusted Site ('Open Redirect')

CWE-601

Top Fix

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Upgrade Version

Upgrade to version libcurl - 8.18.0;https://github.com/curl/curl.git - curl-8_18_0

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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