VulnSocial

CVE-2026-39834Disclosure(golang / crypto)

LOWCVSS 9.1 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.

golang CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-190

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • crypto

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
golang
Products
crypto

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-26: 1Technical Details · 2026-06-26: 106-26
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • DailyCVE@dailycve
    Disclosure

    🔴 golangorg/x/#crypto/ssh, Integer Overflow (CWE-190), #CVE-2026-39834 (Critical) -DC-Jun2026-661 https://dailycve.com/golangorg-x-crypto-ssh-integer-overflow-cwe-190-cve-2026-39834-critical-dc-jun2026-661/

    Post summary

    A new critical integer overflow vulnerability (CWE-190) has been disclosed for golang.org/x/crypto/ssh (CVE-2026-39834) with no exploitation, patch, or PoC details provided.

    0000059
    216 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appgolangcrypto-go-

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