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HTTP/3 Server Data Compromise

🗓️ 09 Oct 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec
🔗 bdu.fstec.ru👁 33 Views

Errors in input data length parameters in HAProxy HTTP/3 server-side software.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-33555
13 Apr 202600:00
–attackerkb
alpinelinux
AlpineLinux
CVE-2026-33555
13 Apr 202600:00
–alpinelinux
cbl_mariner
CBLMariner
CVE-2026-33555 affecting package haproxy for versions less than 2.9.11-5
9 May 202603:31
–cbl_mariner
cgr
Chainguard
CVE-2026-33555 vulnerabilities
7 Jul 202614:17
–cgr
circl
Circl
CVE-2026-33555
16 Apr 202620:00
–circl
cnnvd
CNNVD
HAProxy security vulnerabilities
12 Apr 202616:00
–cnnvd
cve
CVE
CVE-2026-33555
13 Apr 202600:00
–cve
cvelist
Cvelist
CVE-2026-33555
13 Apr 202600:00
–cvelist
debian
Debian
[SECURITY] [DLA 4842-1] haproxy security update
18 Oct 202618:16
–debian
debian
Debian
[SECURITY] [DSA 6291-1] haproxy security update
22 May 202620:18
–debian
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09 Oct 2026 00:00Current
6.6Medium risk
Vulners AI Score6.6
CVSS 25
CVSS 35.8
EPSS0.00307
33