VulnSocial

CVE-2026-93564Patch

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service (DoS) for the affected system.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-1035

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

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

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-20: 1Patch / Workaround · 2026-09-20: 1Technical Details · 2026-09-20: 109-20
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH SEVERITY: CVE-2026-93564 CVSS 7.5 - HAProxy PROXY-v2 nested-TLV ByteBuf reference-count leak Impact: Network-accessible DoS (Availability) Incomplete fix from PR #16881 Patch immediately! #CVE #Vulnerability #PatchNow #ThreatIntel #DFIR https://t.co/aVozZTv8tN

    Post summary

    Tweet announces CVE-2026-93564 (HAProxy PROXY-v2 DoS, CVSS 7.5) with technical details and an explicit call to patch immediately due to an incomplete prior fix (PR #16881).

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    139 followersView on X

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