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.
Affected products
haxx: curl
References4
- curl.se/docs/CVE-2025-14524.html PatchVendor Advisory
- curl.se/docs/CVE-2025-14524.json Vendor Advisory
- www.openwall.com/lists/oss-security/2026/01/07/4 Mailing ListPatchThird Party Advisory
- hackerone.com/reports/3459417 ExploitIssue TrackingThird Party Advisory
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 1% percentile: 53 · as of 11 November 2026
- CWE
- CWE-522CWE-601
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