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Wasmtime: Panic when transcoding misaligned utf-16 strings

🗓️ 09 Apr 2026 20:22:12Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 8 Views

Wasmtime panics when transcoding misaligned utf sixteen strings due to mischecked alignment, enabling denial of service.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-34942
9 Apr 202618:32
attackerkb
Chainguard
CVE-2026-34942 vulnerabilities
22 Apr 202607:18
cgr
CNNVD
wasmtime 输入验证错误漏洞
9 Apr 202600:00
cnnvd
CVE
CVE-2026-34942
9 Apr 202618:32
cve
Cvelist
CVE-2026-34942 Wasmtime panics when transcoding misaligned utf-16 strings
9 Apr 202618:32
cvelist
Debian CVE
CVE-2026-34942
9 Apr 202618:32
debiancve
EUVD
EUVD-2026-20990
9 Apr 202620:22
euvd
NVD
CVE-2026-34942
9 Apr 202619:16
nvd
OPENSUSE Linux
Security update for tree-sitter (important)
19 May 202600:00
opensuse
OSV
CGA-7F8X-XJFG-9CQ8
22 Apr 202605:00
osv
Rows per page
Vulners
Node
OR
bytecodealliancewasmtimeRange37.0.042.0.2rust
OR
bytecodealliancewasmtimeRange25.0.036.0.7rust
OR
bytecodealliancewasmtimeRange<24.0.7rust

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24 Apr 2026 21:03Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.16.5
CVSS 45.9
EPSS0.00354
SSVC
8