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Haraka affected by DoS via `__proto__` email header

🗓️ 01 Apr 2026 22:56:09Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 2 Views

Haraka crashes when a header named __proto__ is received, causing denial of service in single and cluster modes.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-34752
2 Apr 202618:42
attackerkb
Circl
CVE-2026-34752
30 Mar 202621:05
circl
CNNVD
Haraka 安全漏洞
2 Apr 202600:00
cnnvd
CVE
CVE-2026-34752
2 Apr 202618:42
cve
Cvelist
CVE-2026-34752 Haraka affected by DoS via `__proto__` email header
2 Apr 202618:42
cvelist
NVD
CVE-2026-34752
2 Apr 202619:21
nvd
OSV
GHSA-XPH3-R2JF-4VP3 Haraka affected by DoS via `__proto__` email header
1 Apr 202622:56
osv
Positive Technologies
PT-2026-29673
1 Apr 202600:00
ptsecurity
RedhatCVE
CVE-2026-34752
3 Apr 202623:02
redhatcve
Snyk
Uncaught Exception
1 Apr 202622:56
snyk
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haraka_projectharakaRange3.1.3npm

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06 Apr 2026 17:32Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
CVSS 48.7
EPSS0.00025
SSVC
2