CVE-2026-91768

LOWCVSS 6.5 · MEDIUM

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

The IPv6 branch of the FastCGI client access check compares only the first 12 bytes of a 16-byte IPv6 address, so listen.allowed_clients matches on a /96 prefix instead of the exact address. An attacker who can source an address sharing the first 96 bits with an allowed one passes the check and reaches the FastCGI endpoint.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-1023

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-24: 109-24
Referenced assets1 URL
By indicator
Full discourse1 post
  • php-net@php_net

    PHP 8.5.11 released - 57 fixes in 22 components, including security fixes (CVE-2026-91768, CVE-2025-1218, CVE-2026-91769). Changelog + downloads: https://php-net.pro/news/php-8-5-11-released-with-security-fixes

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