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CVE-2026-33807

🗓️ 05 Jun 2026 19:17:24Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 24 Views

OnRegister path handling bug doubles middleware paths for child plugins, bypassing security controls; upgrade to four point zero five.

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Refs
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Family
attackerkb
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CVE-2026-33807
15 Apr 202609:52
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bdu_fstec
BDU FSTEC
Fastify onRegister Function Use-After-Free
21 Apr 202600:00
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circl
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CVE-2026-33807
15 Apr 202601:50
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cnnvd
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15 Apr 202600:00
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CVE-2026-33807
15 Apr 202609:52
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cvelist
Cvelist
CVE-2026-33807 @fastify/express vulnerable to middleware path doubling causing authentication bypass in child plugin scopes
15 Apr 202609:52
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euvd
EUVD
EUVD-2026-22880
16 Apr 202601:03
–euvd
github
Github Security Blog
@fastify/express's middleware path doubling causes authentication bypass in child plugin scopes
16 Apr 202601:03
–github
mend
Mend
CVE-2026-33807
15 Apr 202609:52
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nvd
NVD
CVE-2026-33807
15 Apr 202610:16
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05 Jun 2026 19:17Current
8.2High risk
Vulners AI Score8.2
CVSS 3.19.1
EPSS0.0043
SSVC
24