VulnSocial

CVE-2026-124040

LOWCVSS 9.2 · CRITICAL

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

CivetWeb through 1.16, when built with USE_HTTP2 and enable_http2 on, contains a use-after-free vulnerability in handle_http2() that retains freed :method and :path pointers. Unauthenticated remote attackers can send a later HEADERS frame omitting these pseudo-headers to influence request method or path seen by access rules, or crash the server.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-11-06: 211-06
Referenced assets2 URLs
Full discourse2 posts
  • cve.now@cvedotnow

    🆕 New CVE CivetWeb: remote memory corruption in HTTP/2 request handling (CVE-2026-124040) An unauthenticated attacker can alter the request method or path that access rules check, or crash the server. No patch listed yet https://cve.now/CVE-2026-124040?utm_source=x&utm_medium=social&utm_campaign=cvedotnow&utm_content=critical

    001331.4K
    22.4K followersView on X
  • Enclave Radar@EnclaveRadar

    🆕 New CVE: CVE-2026-124040 (CVSS 9.2) CivetWeb through 1.16 HTTP/2 Use-After-Free via Stale Pseudo-Header State Remote, no login needed. CivetWeb through 1.16, when built with USE_HTTP2 and enable_http2 on, contains a use-after-free vulnerability in… https://app.enclave.ai/threat-feed/CVE-2026-124040

    0000043
    210 followersView on X

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