What is CVE-2025-14524?

CVE-2025-14524 is a medium-severity vulnerability in Curl, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.3/10. Published 2026-01-08.

How severe is CVE-2025-14524?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Open Redirect in Curl

CVE-2025-14524

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.

Vulnerability class: Open Redirect

EPSS: 0.006 (45.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Curl — versions 8.17.0, 8.16.0, 8.15.0
Haxx Curl

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

2499f714-1537-4658-8207-48ae4bb9eae9 (Vendor Advisory)
2499f714-1537-4658-8207-48ae4bb9eae9 (Patch, Vendor Advisory)
2499f714-1537-4658-8207-48ae4bb9eae9 (Exploit, Third Party Advisory, Issue Tracking)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2025-14524?: CVE-2025-14524 is a medium-severity vulnerability in Curl, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.3/10. Published 2026-01-08.
How severe is CVE-2025-14524?: Medium severity. CVSS v3 base score is 5.3 out of 10.