Secuno
ENNL
Book demo

CVE-2026-23918

Apache HTTP Server double free

8.8 HIGHEPSS 49.7%
  1. Published4 May 2026

Description

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.

CVSS 3.1 breakdown

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

Affected products

Apache HTTP Server2.4.66

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-57599.8
A double free and use-after-free vulnerability in the RdbLoadDeletedNodes function of…
CVE-2026-890789.9
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before…
CVE-2026-910188.8
lwIP (Lightweight IP) has a double free vulnerability, which could crash the system,…
CVE-2026-201358.6
A vulnerability in the TLS 1.3 implementation in Cisco Secure Firewall Threat Defense…
CVE-2026-845619.8
A double free issue was addressed with improved memory management. This issue is fixed…
CVE-2026-859218.2
Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate…

Frequently asked

Is CVE-2026-23918 being actively exploited?

CVE-2026-23918 is not in the CISA KEV catalog. Its EPSS exploit probability is 49.7%.

How severe is CVE-2026-23918?

CVE-2026-23918 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 49.7% probability of exploitation.

Which products are affected by CVE-2026-23918?

Affected products include Apache HTTP Server.

How do I fix CVE-2026-23918?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-23918 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.