VulnSocial

CVE-2026-47220Disclosure(envoyproxy / envoy)

LOWCVSS 7.5 · HIGH

Signal is active with 2 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

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTED_SERVER_NAME(X:Y)% is used in log format and host related options is specified, like HOST_FIRST, SNI_FIRST, it's possible to crash Envoy when the specified host header is missing in the request headers. This vulnerability is fixed in 1.37.5 and 1.38.3.

envoyproxy CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Exploit / PoC references
Other references
Weakness type (CWE)
CWE-476

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

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

  • envoy

Threat summary

  • 2 mentions across 1 observed day

What's happening

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

Affected systems

Vendors
envoyproxy
Products
envoy

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-06-26: 2Technical Details · 2026-06-26: 106-26
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    General

    🚨*CVE* CVE-2026-47220 Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTED_SERVER_NAME(X:Y)% is u… https://www.cve.org/CVERecord?id=CVE-2026-47220 ----- Traducción: CVE-2026-47220 Env… http://infoflow.cloud`

    Post summary

    The tweet simply points to CVE-2026-47220 and lists a few impacted Envoy versions, providing no PoC, exploit, patch, or technical details.

    0000025
    89 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-47220 Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTED_SERVER_NAME(X:Y)% is u… https://www.cve.org/CVERecord?id=CVE-2026-47220

    Post summary

    The message announces CVE‑2026‑47220 as affecting certain Envoy versions, providing limited technical details but no PoC, exploit, or mitigation information.

    00000623
    57.7K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appenvoyproxyenvoy---

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