Description
guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the request host in the Domain field instead of marking cookies as host-only. Attackers controlling child hosts can receive host-only cookies intended only for parent hosts, potentially disclosing session identifiers and authorization tokens when the same cookie jar is reused across trust boundaries.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| guzzle | guzzle | < 7.15.1 | 7.15.1 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | guzzle | 7.15.1-1 | — |
| Debian 13 | guzzle | No fix yet | — |
| Debian 12 | guzzle | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | guzzle | No fix yet | — |
| Ubuntu 26.04 LTS | guzzle | No fix yet | — |
| Ubuntu 24.04 LTS | guzzle | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | nextcloud-server-33 | 33.0.6-r8 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | guzzlehttp/guzzle | < 7.15.1 | 7.15.1 | GHSA-wm3w-8rrp-j577 |
Advisories 2
- WID-SEC-2026-3403 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 24, 2026
- NCSC-2026-0375 Kwetsbaarheden verholpen in Oracle Communications NCSC-NL (Netherlands) · Sep 16, 2026
References
- GitHub Security Advisory (GHSA-wm3w-8rrp-j577) vendor-advisory
- VulnCheck Advisory: guzzlehttp/guzzle before 7.15.1 Host-only Cookie Scope third-party-advisory