CVE-2025-14524

Publication date 6 January 2026

Last updated 27 February 2026

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Why is this CVE low priority?

This is rated as being low severity by Curl developers

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
curl	25.10 questing	Fixed 8.14.1-2ubuntu1.1
	25.04 plucky	Ignored end of life, was needed
	24.04 LTS noble	Fixed 8.5.0-2ubuntu10.7
	22.04 LTS jammy	Fixed 7.81.0-1ubuntu1.22
	20.04 LTS focal	Ignored changes too intrusive
	18.04 LTS bionic	Ignored changes too intrusive
	16.04 LTS xenial	Ignored changes too intrusive
	14.04 LTS trusty	Ignored changes too intrusive

Notes

hlibk

On focal and below, a major code refactor needs to be backported beforehand which is intrusive and may introduce regressions.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
curl	Upstream: 1a82227

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-8062-1
curl vulnerabilities
25 February 2026