Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 7.33.0, < 8.18.0 |
Related Weaknesses (CWE)
References
- https://curl.se/docs/CVE-2025-14524.htmlVendor AdvisoryPatch
- https://curl.se/docs/CVE-2025-14524.jsonVendor Advisory
- https://hackerone.com/reports/3459417ExploitIssue TrackingThird Party Advisory
- http://www.openwall.com/lists/oss-security/2026/01/07/4Mailing ListThird Party AdvisoryPatch
FAQ
What is CVE-2025-14524?
CVE-2025-14524 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ...
How severe is CVE-2025-14524?
CVE-2025-14524 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-14524?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl.