TI-2026-07361 Aliases CVE-2026-8368 GHSA-39wp-j2gg-h44j

Insufficiently protected credentials in OALDERS LWP::UserAgent

LOW 28CWE-522Published 2026-05-12 · Updated 2026-05-19

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Partial Red Hat: 3 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-522.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00266 18th percentileScored 2026-11-07

Fix Partial LWP::UserAgent (OALDERS): 6.83Red Hat: 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OALDERS	LWP::UserAgent	before 6.83	6.83	Patch available	CNA

LWP::UserAgent VendorOALDERS Affected before 6.83 Fixed in 6.83 Patch available CNA

Remediation

Fix · CNA LWP::UserAgent (OALDERS) Fixed in 6.83

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-8368
2026-10-03 Alias added: GHSA-39wp-j2gg-h44j

References

Patch 1

https://github.com/libwww-perl/libwww-perl/commit/9c4aeb6f2dd32f2b7eaf2d7827cade31ea6cb2c6.patch

Other 3

TI-2026-07425 OS command injection in OALDERS HTTP::Daemon CVSS 3.1CRITICAL 9.1
TI-2026-12419 Regular expression denial of service in OALDERS HTTP::Date CVSS 3.1HIGH 7.5
TI-2026-07753 Use after free in OALDERS HTML::Entities CVSS 3.1HIGH 7.5
TI-2026-07568 Deserialization of untrusted data in OALDERS WWW::Mechanize::Cached CVSS 3.1MEDIUM 5.3

Sources

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