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CVE-2026-33131: Authentication Bypass by Spoofing

🗓️ 20 Mar 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 4 Views

Host header spoofing in H3 2.0.0-2.0.1-rc.14 allows unauthenticated middleware bypass.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-33131
20 Mar 202610:16
–attackerkb
circl
Circl
CVE-2026-33131
17 Mar 202611:50
–circl
cnnvd
CNNVD
H3 安全漏洞
20 Mar 202600:00
–cnnvd
cve
CVE
CVE-2026-33131
20 Mar 202610:16
–cve
cvelist
Cvelist
CVE-2026-33131 h3 has a middleware bypass with one gadget
20 Mar 202610:16
–cvelist
github
Github Security Blog
h3 has a middleware bypass with one gadget
18 Mar 202616:18
–github
mend
Mend
CVE-2026-33131
20 Mar 202610:16
–mend
nvd
NVD
CVE-2026-33131
20 Mar 202611:18
–nvd
osv
OSV
GHSA-3VJ8-JMXQ-CGJ5 h3 has a middleware bypass with one gadget
18 Mar 202616:18
–osv
ptsecurity
Positive Technologies
PT-2026-26194
18 Mar 202600:00
–ptsecurity
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20 Mar 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.4 - 9.1
EPSS0.00443
SSVC
4