CVE-2026-8368
MEDIUM EPSS 18.0%
Published May 12, 20261mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Published May 12, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
Description
LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects. On a 3xx response, the redirect handler strips only Host and Cookie before issuing the follow-up request. Caller-supplied Authorization and Proxy-Authorization headers are sent unchanged to the redirect target, including across scheme, host, or port changes. A redirect to an attacker controlled host therefore discloses the caller's credentials to that host.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
18.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-522
References 5
- openwall.com http://www.openwall.com/lists/oss-security/2026/05/12/7
- github.com https://github.com/libwww-perl/libwww-perl/commit/9c4aeb6f2dd32f2b7eaf2d7827cade31ea6cb2c6.patch
- github.com https://github.com/libwww-perl/libwww-perl/pull/284
- github.com https://github.com/libwww-perl/libwww-perl/pull/512
- metacpan.org https://metacpan.org/release/OALDERS/libwww-perl-6.83/changes
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.