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Russh: client wrong-length X25519 `clone_from_slice` panic (pre-auth DoS)

🗓️ 24 Jul 2026 16:47:16Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 21 Views

A malformed key-exchange reply crashes a russh client with a wrong-length X25519 key during pre-auth DoS.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-73429
12 Aug 202620:53
–attackerkb
cgr
Chainguard
CVE-2026-73429 vulnerabilities
13 Aug 202620:26
–cgr
circl
Circl
CVE-2026-73429
12 Aug 202622:35
–circl
cve
CVE
CVE-2026-73429
12 Aug 202620:53
–cve
cvelist
Cvelist
CVE-2026-73429 Russh: client wrong-length X25519 `clone_from_slice` panic (pre-auth DoS)
12 Aug 202620:53
–cvelist
debiancve
Debian CVE
CVE-2026-73429
12 Aug 202620:53
–debiancve
euvd
EUVD
EUVD-2026-57624
12 Aug 202620:53
–euvd
nvd
NVD
CVE-2026-73429
12 Aug 202621:17
–nvd
osv
OSV
CGA-CMCX-G735-2723
25 Jul 202611:38
–osv
osv
OSV
CGA-JCM7-X4R5-GCPP
25 Jul 202613:10
–osv
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Vulners
Node
russh_projectrusshRange≤0.62.3rust

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12 Aug 2026 20:53Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.3
EPSS0.00507
SSVC
21