CVE-2025-14524

MEDIUM

curl Cross-Protocol Redirect - OAuth2 Bearer Token Disclosure

Title source: manual

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.

References (4)

Core 4

Core References

Vendor Advisory, Patch

https://curl.se/docs/CVE-2025-14524.html

Vendor Advisory

https://curl.se/docs/CVE-2025-14524.json

Exploit, Issue Tracking, Third Party Advisory

https://hackerone.com/reports/3459417

Mailing List, Third Party Advisory, Patch

http://www.openwall.com/lists/oss-security/2026/01/07/4

Scores

CVSS v3 5.3

EPSS 0.0061

EPSS Percentile 44.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-601

Status published

Products (50)

curl/curl 7.33.0

curl/curl 7.34.0

curl/curl 7.35.0

curl/curl 7.36.0

curl/curl 7.37.0

curl/curl 7.37.1

curl/curl 7.38.0

curl/curl 7.39.0

curl/curl 7.40.0

curl/curl 7.41.0

... and 40 more

Published Jan 08, 2026

Tracked Since Feb 18, 2026