# Guzzle vulnerabilities

Source: https://junglewise.ai/threats/vendors/guzzle  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/guzzle.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 12 vulnerabilities in Guzzle: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-69246, was published on 3 August 2026. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 12 (0 critical, 0 exploited in the wild)

## About Guzzle

Guzzle is a PHP HTTP client that provides an interface for sending HTTP requests and integrating with web services.

## Latest Guzzle vulnerabilities

- [CVE-2026-69246: Guzzle noncanonical host bypass in URI handlers](https://junglewise.ai/threats/cve-2026-69246-guzzle-noncanonical-host-bypass-in-uri-handlers) (high, CVSS 7.2, published 3 Aug 2026)
- [Guzzle GuzzleHTTP host-only cookie scope disclosure](https://junglewise.ai/threats/guzzle-guzzlehttp-host-only-cookie-scope-disclosure-958db8d5) (medium, CVSS 5.9, published 1 Aug 2026)
- [Guzzle unbounded response cookies denial of service in CookieJar](https://junglewise.ai/threats/guzzle-unbounded-response-cookies-denial-of-service-in-cookiejar-f650c2bc) (medium, CVSS 5.3, published 1 Aug 2026)
- [Guzzle information disclosure in RedirectMiddleware Referer headers](https://junglewise.ai/threats/guzzle-information-disclosure-in-redirectmiddleware-referer-headers-d2e711b6) (medium, CVSS 5.9, published 1 Aug 2026)
- [Guzzle Proxy-Authorization header disclosure to origin servers](https://junglewise.ai/threats/guzzle-proxy-authorization-header-disclosure-to-origin-servers-7a8a6575) (medium, CVSS 5.3, published 1 Aug 2026)
- [CVE-2026-67355: Guzzle host-only cookie scope not preserved](https://junglewise.ai/threats/cve-2026-67355-guzzle-host-only-cookie-scope-not-preserved) (medium, CVSS 5.9, published 1 Aug 2026)
- [CVE-2026-67354: Guzzle URI fragment disclosure in redirect Referer header](https://junglewise.ai/threats/cve-2026-67354-guzzle-uri-fragment-disclosure-in-redirect-referer-header) (medium, CVSS 5.9, published 1 Aug 2026)
- [CVE-2026-59883: Guzzle CookieJar cross-host cookie disclosure via IP domain matching](https://junglewise.ai/threats/cve-2026-59883-guzzle-cookiejar-cross-host-cookie-disclosure-via-ip-domain) (medium, CVSS 4.7, published 8 Jul 2026)
- [CVE-2026-55767: Guzzle CookieJar improper domain validation allows cookie injection](https://junglewise.ai/threats/cve-2026-55767-guzzle-cookiejar-improper-domain-validation-allows-cookie) (medium, CVSS 5.8, published 23 Jun 2026)
- [CVE-2026-55568: Guzzle silent HTTPS proxy downgrade to cleartext](https://junglewise.ai/threats/cve-2026-55568-guzzle-silent-https-proxy-downgrade-to-cleartext) (medium, CVSS 5.9, published 23 Jun 2026)
- [CVE-2026-53723: Guzzle Guzzle Services XML injection in request serializer](https://junglewise.ai/threats/cve-2026-53723-guzzle-guzzle-services-xml-injection-in-request-serializer) (medium, CVSS 5.8, published 11 Jun 2026)
- [CVE-2025-21617: Guzzle OAuth Subscriber weak PRNG in nonce generation](https://junglewise.ai/threats/cve-2025-21617-guzzle-oauth-subscriber-weak-prng-in-nonce-generation) (medium, CVSS 4, published 6 Jan 2025)

## Most severe Guzzle vulnerabilities

- [CVE-2026-69246: Guzzle noncanonical host bypass in URI handlers](https://junglewise.ai/threats/cve-2026-69246-guzzle-noncanonical-host-bypass-in-uri-handlers) (high, CVSS 7.2, published 3 Aug 2026)
- [CVE-2026-67355: Guzzle host-only cookie scope not preserved](https://junglewise.ai/threats/cve-2026-67355-guzzle-host-only-cookie-scope-not-preserved) (medium, CVSS 5.9, published 1 Aug 2026)
- [CVE-2026-67354: Guzzle URI fragment disclosure in redirect Referer header](https://junglewise.ai/threats/cve-2026-67354-guzzle-uri-fragment-disclosure-in-redirect-referer-header) (medium, CVSS 5.9, published 1 Aug 2026)
- [CVE-2026-55568: Guzzle silent HTTPS proxy downgrade to cleartext](https://junglewise.ai/threats/cve-2026-55568-guzzle-silent-https-proxy-downgrade-to-cleartext) (medium, CVSS 5.9, published 23 Jun 2026)
- [Guzzle GuzzleHTTP host-only cookie scope disclosure](https://junglewise.ai/threats/guzzle-guzzlehttp-host-only-cookie-scope-disclosure-958db8d5) (medium, CVSS 5.9, published 1 Aug 2026)
- [Guzzle information disclosure in RedirectMiddleware Referer headers](https://junglewise.ai/threats/guzzle-information-disclosure-in-redirectmiddleware-referer-headers-d2e711b6) (medium, CVSS 5.9, published 1 Aug 2026)
- [CVE-2026-53723: Guzzle Guzzle Services XML injection in request serializer](https://junglewise.ai/threats/cve-2026-53723-guzzle-guzzle-services-xml-injection-in-request-serializer) (medium, CVSS 5.8, published 11 Jun 2026)
- [CVE-2026-55767: Guzzle CookieJar improper domain validation allows cookie injection](https://junglewise.ai/threats/cve-2026-55767-guzzle-cookiejar-improper-domain-validation-allows-cookie) (medium, CVSS 5.8, published 23 Jun 2026)
- [Guzzle unbounded response cookies denial of service in CookieJar](https://junglewise.ai/threats/guzzle-unbounded-response-cookies-denial-of-service-in-cookiejar-f650c2bc) (medium, CVSS 5.3, published 1 Aug 2026)
- [Guzzle Proxy-Authorization header disclosure to origin servers](https://junglewise.ai/threats/guzzle-proxy-authorization-header-disclosure-to-origin-servers-7a8a6575) (medium, CVSS 5.3, published 1 Aug 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Guzzle technologies

- [Guzzle](https://junglewise.ai/threats/technologies/guzzle): 10 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Guzzle vulnerabilities", https://junglewise.ai/threats/vendors/guzzle, 9 November 2026.