Vulnerability · Published Jun 8, 2026 · Assigned by apache
CVE-2026-48913Apache HTTP Server: mod_http2 memory corruption when file handles exhausted
High 7.3
In plain English
A high-severity use-after-free in Apache HTTP Server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.5%top 58.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | mod_http2 | 2.0.29-4.el10_2.2 | ALSA-2026:34355 |
| AlmaLinux:9 | mod_http2 | 2.0.26-6.el9_8.2 | ALSA-2026:59387 |
| Alpine:v3.21 | apache2 | 2.4.68-r0 | ALPINE-CVE-2026-48913 |
| Alpine:v3.22 | apache2 | 2.4.68-r0 | ALPINE-CVE-2026-48913 |
| Alpine:v3.23 | apache2 | 2.4.68-r0 | ALPINE-CVE-2026-48913 |
| Alpine:v3.24 | apache2 | 2.4.68-r0 | ALPINE-CVE-2026-48913 |
| Debian:12 | apache2 | 2.4.68-1~deb12u1 | DEBIAN-CVE-2026-48913 |
| Debian:13 | apache2 | 2.4.68-1~deb13u1 | DEBIAN-CVE-2026-48913 |
| Debian:14 | apache2 | 2.4.68-1 | DEBIAN-CVE-2026-48913 |
| Rocky Linux:10 | mod_http2 | 0:2.0.29-4.el10_2.2 | RLSA-2026:34355 |
| Rocky Linux:9 | mod_http2 | 0:2.0.26-6.el9_8.2 | RLSA-2026:59387 |
| Ubuntu:22.04:LTS | apache2 | 2.4.52-1ubuntu4.23 | USN-8516-1 |
| Ubuntu:22.04:LTS | apache2 | 2.4.52-1ubuntu4.23 | UBUNTU-CVE-2026-48913 |
| Ubuntu:24.04:LTS | apache2 | 2.4.58-1ubuntu8.15 | USN-8516-1 |
| Ubuntu:24.04:LTS | apache2 | 2.4.58-1ubuntu8.15 | UBUNTU-CVE-2026-48913 |
| Ubuntu:25.10 | apache2 | no fix listed | UBUNTU-CVE-2026-48913 |
| Ubuntu:26.04:LTS | apache2 | 2.4.66-2ubuntu2.4 | UBUNTU-CVE-2026-48913 |
| Ubuntu:26.04:LTS | apache2 | 2.4.66-2ubuntu2.4 | USN-8516-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.55 – through 2.4.67 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L