CVE-2026-59883
Fixed in a distro release EPSS <1%CVSS 4.7
Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain() applied ordinary suffix matching to domains such as 192.168.0.1, [::1], or 1, allowing cross-host cookie disclosure, cookie injection, or session fixation. This issue is fixed in version 7.12.3.
Products: guzzle
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Packagist | guzzlehttp/guzzle | 7.12.3 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | nextcloud-server-31 | 31.0.14-r5 |
| Debian 12 | guzzle | no fix |
| Debian 13 | guzzle | no fix |
| Debian 14 | guzzle | 7.12.3-1 |
| Ubuntu 24.04 LTS | guzzle | no fix |
| Ubuntu 25.10 | guzzle | no fix |
| Ubuntu 26.04 LTS | guzzle | no fix |
| Ubuntu 26.10 | guzzle | no fix |
| Wolfi | nextcloud-server-31 | 31.0.14-r5 |