CVE•Published 2026-07-08•Modified 2026-07-13•0 articles on news•4 live references•NVD data

CVE-2026-59883Guzzlephp · Guzzle

Vulnerability data via NVD (ingested)

CVSS v3.1

4.7

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS percentile

Exploit Prediction Scoring System · top 98% of all CVEs

Weaknesses (CWE)

CWE-346Origin Validation Error CWE-384Session Fixation

Description

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.

Timeline

Published 2026-07-08

Modified 2026-07-13

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-59883

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Guzzlephp Guzzle"

All exposed Guzzlephp Guzzle instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Guzzle"

HTTP body or banner mentions "Guzzle" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-59883