VulnSocial

CVE-2026-42505Patch(golang / go)

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch golang go systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello.

golang CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Weakness type (CWE)
CWE-201

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • go

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
golang
Products
go

1 version affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-09: 1Patch / Workaround · 2026-07-09: 1Technical Details · 2026-07-09: 107-09
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Open Source Security mailing list@oss_security
    Patch

    Go 1.26.5, 1.25.12 fix 2 CVEs https://www.openwall.com/lists/oss-security/2026/07/08/10 CVE-2026-39822: os: Root escape via symlink plus trailing slash CVE-2026-42505: crypto/tls: Encrypted Client Hello privacy leak

    Post summary

    Go has released version 1.26.5 (and 1.25.12) with patches that resolve CVE‑2026‑39822 (root escape via symlink + trailing slash) and CVE‑2026‑42505 (Encrypted Client Hello privacy leak).

    01041678
    4.7K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appgolanggo---
Appgolanggo1.27--

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