CVE-2026-23918

VendorapacheProducthttp serverDiscoveredMay 4, 2026UpdatedOct 26, 2026

Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.

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CVSS v3.1

8.8 HIGH

EPSS

49.7%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

ScopeUNCHANGED

ConfidentialityHIGH

IntegrityHIGH

AvailabilityHIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Connections

5 relationships

Timeline

disclosure → media coverage

May 4, 2026

Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026

May 5, 2026

thehackernews.com reports: Critical Apache HTTP/2 Flaw (CVE-2026-23918) Enables DoS and Potential RCE

May 6, 2026

ubuntu.com reports: USN-8239-1: Apache HTTP Server vulnerabilities

Public PoC (10)

github.com/qassam-315/CVE-2026-23918-Elite-Auditor github.com/12lie20/CVE-2026-23918-test github.com/rshosting/Apache-CVE-2026-23918-fix github.com/aa022/CVE-2026-23918-Passive-Audit github.com/rhasan-com/CVE-2026-23918 github.com/seguridadentrerios/CVE-2026-23918 github.com/xeloxa/CVE-2026-23918-Apache-H2-PoC github.com/hackervlogofficial/CVE-2026-23918 github.com/CYFARE/CVE-2026-23918-Apache-HTTP-Server-DoubleFree-PoC github.com/alt3kx/CVE-2026-23918

Unverified third-party code — review before executing.