guzzle vulnerabilities and fixes

Recent CVEs affecting guzzle, with upgrade or downgrade steps. 3 tracked.

guzzle has 3 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 3. Most recent: 2026-07-08. Highest priority: CVE-2026-55767 (score 28/100).

• CVE-2026-55767 MEDIUM 5.8 UPGRADE Guzzle is an extensible PHP HTTP client
• CVE-2026-59883 MEDIUM 4.7 UPGRADE Guzzle is an extensible PHP HTTP client
• CVE-2026-55568 MEDIUM 5.9 UPGRADE Guzzle is an extensible PHP HTTP client

FAQ

How do I fix guzzle vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is guzzle being exploited right now?

None of the tracked guzzle CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which guzzle CVE should I patch first?

CVE-2026-55767 currently ranks highest (28/100): Guzzle is an extensible PHP HTTP client.

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