CVE catalog
CVE-2026-8368
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 i
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.27% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libwww-perl | sid | 6.83-1 | fixed |
| Debian | libwww-perl | forky | 6.83-1 | fixed |
| Debian | libwww-perl | trixie | 6.78-1 | vulnerable |
| Debian | libwww-perl | bookworm | 6.68-1 | vulnerable |
| Cpe | libwww-perl | Not reported | 6.76-1ubuntu0.1 | fixed |
| Cpe | libwww-perl | Not reported | Not reported | vulnerable |
| Suse | perl-libwww-perl | linux enterprise server ltss extended security 12 sp5 | 6.05-6.3.1 | fixed |
| Suse | perl-libwww-perl | linux enterprise module for basesystem 15 sp7 | 6.31-150000.3.3.1 | fixed |
| Suse | perl-libwww-perl | linux enterprise server 16.0 | 6.770.0-160000.3.1 | fixed |
| Suse | perl-libwww-perl | linux enterprise server for sap applications 16.0 | 6.770.0-160000.3.1 | fixed |
| Opensuse | perl-libwww-perl | leap 16.0 | 6.770.0-160000.3.1 | fixed |
| Ubuntu | libwww-perl | 22.04 | 6.53-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.59-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.60-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.61-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.61-1ubuntu0.1 | fixed |
| Ubuntu | libwww-perl | 24.04 | 6.72-1 | vulnerable |
| Ubuntu | libwww-perl | 24.04 | 6.76-1 | vulnerable |
| Ubuntu | libwww-perl | 24.04 | 6.76-1ubuntu0.1 | fixed |
| Ubuntu | libwww-perl | 25.10 | 6.78-1 | vulnerable |
| Ubuntu | libwww-perl | 25.10 | 6.78-1ubuntu0.1 | fixed |
| Ubuntu | libwww-perl | 26.04 | 6.78-1 | vulnerable |
| Ubuntu | libwww-perl | 26.04 | 6.81-1 | vulnerable |
| Ubuntu | libwww-perl | 26.04 | 6.81-1build1 | vulnerable |
| Ubuntu | libwww-perl | 26.04 | 6.81-1ubuntu0.1 | fixed |
| Ubuntu | libwww-perl | 14.04 | 6.05-1 | vulnerable |
| Ubuntu | libwww-perl | 14.04 | 6.05-2 | vulnerable |
| Ubuntu | libwww-perl | 16.04 | 6.13-1 | vulnerable |
| Ubuntu | libwww-perl | 16.04 | 6.15-1 | vulnerable |
| Ubuntu | libwww-perl | 18.04 | 6.15-2 | vulnerable |
| Ubuntu | libwww-perl | 18.04 | 6.29-1 | vulnerable |
| Ubuntu | libwww-perl | 18.04 | 6.31-1 | vulnerable |
| Ubuntu | libwww-perl | 18.04 | 6.31-1ubuntu0.1 | vulnerable |
| Ubuntu | libwww-perl | 20.04 | 6.39-1 | vulnerable |
| Ubuntu | libwww-perl | 20.04 | 6.41-1 | vulnerable |
| Ubuntu | libwww-perl | 20.04 | 6.42-1 | vulnerable |
| Ubuntu | libwww-perl | 20.04 | 6.43-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.53-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.59-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.60-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.61-1 | vulnerable |
| Ubuntu | libwww-perl | 22.04 | 6.61-1ubuntu0.1 | fixed |
| Ubuntu | libwww-perl | 24.04 | 6.72-1 | vulnerable |
| Ubuntu | libwww-perl | 24.04 | 6.76-1 | vulnerable |
| Ubuntu | libwww-perl | 24.04 | 6.76-1ubuntu0.1 | fixed |
| Ubuntu | libwww-perl | 25.10 | 6.78-1 | vulnerable |
| Ubuntu | libwww-perl | 25.10 | 6.78-1ubuntu0.1 | fixed |
| Ubuntu | libwww-perl | 26.04 | 6.78-1 | vulnerable |
| Ubuntu | libwww-perl | 26.04 | 6.81-1 | vulnerable |
| Ubuntu | libwww-perl | 26.04 | 6.81-1build1 | vulnerable |
| Ubuntu | libwww-perl | 26.04 | 6.81-1ubuntu0.1 | fixed |
| Opensuse | perl-libwww-perl | tumbleweed | 6.830.0-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libwww-perl | source | sid | 6.83-1 | not yet assigned | Not reported | [1136449] |
| Debian | libwww-perl | source | forky | 6.83-1 | not yet assigned | Not reported | [1136449] |
| Debian | libwww-perl | source | trixie | (unfixed) | not yet assigned | Not reported | [1136449] |
| Debian | libwww-perl | source | bookworm | (unfixed) | not yet assigned | Not reported | [1136449] |
| Cpe | libwww-perl | cpe | Not reported | 6.76-1ubuntu0.1 | Not reported | Not reported | Not reported |
| Suse | perl-libwww-perl | rpm | linux enterprise server ltss extended security 12 sp5 | 6.05-6.3.1 | Not reported | SUSE-SU-2026:3033-1 | Not reported |
| Suse | perl-libwww-perl | rpm | linux enterprise module for basesystem 15 sp7 | 6.31-150000.3.3.1 | Not reported | SUSE-SU-2026:2962-1 | Not reported |
| Suse | perl-libwww-perl | rpm | linux enterprise server 16.0 | 6.770.0-160000.3.1 | Not reported | SUSE-SU-2026:22353-1 | Not reported |
| Suse | perl-libwww-perl | rpm | linux enterprise server for sap applications 16.0 | 6.770.0-160000.3.1 | Not reported | SUSE-SU-2026:22353-1 | Not reported |
| Opensuse | perl-libwww-perl | rpm | leap 16.0 | 6.770.0-160000.3.1 | Not reported | OPENSUSE-SU-2026:21045-1 | Not reported |
| Ubuntu | libwww-perl | deb | 22.04 | 6.61-1ubuntu0.1 | Not reported | USN-8378-1 | Not reported |
| Ubuntu | libwww-perl | deb | 24.04 | 6.76-1ubuntu0.1 | Not reported | USN-8378-1 | Not reported |
| Ubuntu | libwww-perl | deb | 25.10 | 6.78-1ubuntu0.1 | Not reported | USN-8378-1 | Not reported |
| Ubuntu | libwww-perl | deb | 26.04 | 6.81-1ubuntu0.1 | Not reported | USN-8378-1 | Not reported |
| Ubuntu | libwww-perl | deb | 22.04 | 6.61-1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-8368 | Not reported |
| Ubuntu | libwww-perl | deb | 24.04 | 6.76-1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-8368 | Not reported |
| Ubuntu | libwww-perl | deb | 25.10 | 6.78-1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-8368 | Not reported |
| Ubuntu | libwww-perl | deb | 26.04 | 6.81-1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-8368 | Not reported |
| Opensuse | perl-libwww-perl | rpm | tumbleweed | 6.830.0-1.1 | Not reported | OPENSUSE-SU-2026:10781-1 | Not reported |
Notes
[trixie] libwww-perl: Minor issue [bookworm] libwww-perl: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libwww-perl]Affected
Details (2)
6.68-1· all · bookwormAffected
nvd · libwww-perl · debian · bookworm; nvd · libwww-perl · debian · 12
6.68-1· all · bookwormAffected
nvd · libwww-perl · debian · bookworm; nvd · libwww-perl · debian · 12
[Debian 13 (Trixie)]
- [libwww-perl]Affected
Details (2)
6.78-1· all · trixieAffected
nvd · libwww-perl · debian · 13
6.78-1· all · trixieAffected
nvd · libwww-perl · debian · 13
[openSUSE Tumbleweed]
- [perl-libwww-perl]Fixed
Source package: [perl-libwww-perl]
Details (1)
6.830.0-1.3· noarch · tumbleweedFixed · Fixed:
6.830.0-1.1nvd · perl-libwww-perl · opensuse · tumbleweed
Observed:
References
- [http://www.openwall.com/lists/oss-security/2026/05/12/7]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_3033-1.json]
- [https://github.com/libwww-perl/libwww-perl/commit/9c4aeb6f2dd32f2b7eaf2d7827cade31ea6cb2c6.patch]
- [https://github.com/libwww-perl/libwww-perl/pull/284]
- [https://github.com/libwww-perl/libwww-perl/pull/512]
- [https://metacpan.org/release/OALDERS/libwww-perl-6.83/changes]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-8368]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-8368]
- [https://osv.dev/vulnerability/SUSE-SU-2026:22353-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2962-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:3033-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-8368]
- [https://osv.dev/vulnerability/USN-8378-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10781-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21045-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-8368]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8368.json]
- [https://ubuntu.com/security/notices/USN-8378-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2503.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]