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CVE-2026-8368— LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects

Quick assessment

Affected
OALDERS LWP::UserAgent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LWP::UserAgent是libwww-perl开源的一个Web用户代理类，用于发送HTTP请求。 LWP::UserAgent 6.83之前版本存在安全漏洞，该漏洞源于跨源重定向时未正确处理Authorization和Proxy-Authorization标头，可能导致凭据泄露。

AI Predicted 7.4 Difficulty: Trivial EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
OALDERS LWP::UserAgent < 6.83 affected
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I. Basic Information for CVE-2026-8368

Vulnerability Information
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Vulnerability Title
LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的凭证保护机制
Source: CVE Program / CVE List V5
Vulnerability Title
LWP::UserAgent 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LWP::UserAgent是libwww-perl开源的一个Web用户代理类，用于发送HTTP请求。 LWP::UserAgent 6.83之前版本存在安全漏洞，该漏洞源于跨源重定向时未正确处理Authorization和Proxy-Authorization标头，可能导致凭据泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OALDERS LWP::UserAgent 0 ~ 6.83 -

II. Public POCs for CVE-2026-8368

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III. Intelligence Information for CVE-2026-8368

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Patches & Fixes for CVE-2026-8368 (3)

IV. Related Vulnerabilities

Same vendor: OALDERS
Same weakness: CWE-522

V. Comments for CVE-2026-8368

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