CVE-2026-23918
Apache HTTP Server: http2: double free and possible RCE on early reset
CVE-2026-23918 is fixed in 17 products on 2 platforms, first by apache2 2.4.66-2ubuntu2.1, released May 4, 2026. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
8.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.4973
98th percentile
This is a vulnerability in open source code and Apple Software is among the affected projects. The
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| macOS | |||
| Sequoia | 15.7.8 | Sequoia 15.7.8 | Jul 27, 2026 |
| Sonoma | 14.8.8 | Sonoma 14.8.8 | Jul 27, 2026 |
| Tahoe | 26.6 | Tahoe 26.6 | Jul 27, 2026 |
| Linux | |||
| apache2 · Debian 12.15 (bookworm) | 2.4.67-1~deb12u2 | DEBIAN-CVE-2026-23918 | May 15, 2026 |
| apache2 · Debian 13.5 (trixie) | 2.4.66-1~deb13u2 | DEBIAN-CVE-2026-23918 | May 15, 2026 |
| apache2 · Debian 14 | 2.4.66-5 | DEBIAN-CVE-2026-23918 | May 15, 2026 |
| apache2 · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu2.1 | apache2 2.4.66-2ubuntu2.1 | May 4, 2026 |
| apache2 · opensuse-leap 16.0 | 2.4.66-160000.2.1 | OPENSUSE-SU-2026:21115-1 | Jun 20, 2026 |
| apache2 · sles 16.0 | 2.4.66-160000.2.1 | SUSE-SU-2026:22209-1 | Jun 20, 2026 |
| apache2-bin · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu2.1 | apache2-bin 2.4.66-2ubuntu2.1 | May 4, 2026 |
| apache2-data · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu2.1 | apache2-data 2.4.66-2ubuntu2.1 | May 4, 2026 |
| apache2-devel · opensuse-leap 16.0 | 2.4.66-160000.2.1 | OPENSUSE-SU-2026:21115-1 | Jun 20, 2026 |
| apache2-devel · sles 16.0 | 2.4.66-160000.2.1 | SUSE-SU-2026:22209-1 | Jun 20, 2026 |
| apache2-event · opensuse-leap 16.0 | 2.4.66-160000.2.1 | OPENSUSE-SU-2026:21115-1 | Jun 20, 2026 |
| apache2-event · sles 16.0 | 2.4.66-160000.2.1 | SUSE-SU-2026:22209-1 | Jun 20, 2026 |
| apache2-manual · opensuse-leap 16.0 | 2.4.66-160000.2.1 | OPENSUSE-SU-2026:21115-1 | Jun 20, 2026 |
| apache2-manual · sles 16.0 | 2.4.66-160000.2.1 | SUSE-SU-2026:22209-1 | Jun 20, 2026 |
| apache2-prefork · opensuse-leap 16.0 | 2.4.66-160000.2.1 | OPENSUSE-SU-2026:21115-1 | Jun 20, 2026 |
| apache2-prefork · sles 16.0 | 2.4.66-160000.2.1 | SUSE-SU-2026:22209-1 | Jun 20, 2026 |
| apache2-suexec-custom · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu2.1 | apache2-suexec-custom 2.4.66-2ubuntu2.1 | May 4, 2026 |
| apache2-suexec-pristine · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu2.1 | apache2-suexec-pristine 2.4.66-2ubuntu2.1 | May 4, 2026 |
| apache2-utils · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu2.1 | apache2-utils 2.4.66-2ubuntu2.1 | May 4, 2026 |
| apache2-utils · opensuse-leap 16.0 | 2.4.66-160000.2.1 | OPENSUSE-SU-2026:21115-1 | Jun 20, 2026 |
| apache2-utils · sles 16.0 | 2.4.66-160000.2.1 | SUSE-SU-2026:22209-1 | Jun 20, 2026 |
| apache2-worker · opensuse-leap 16.0 | 2.4.66-160000.2.1 | OPENSUSE-SU-2026:21115-1 | Jun 20, 2026 |
| apache2-worker · sles 16.0 | 2.4.66-160000.2.1 | SUSE-SU-2026:22209-1 | Jun 20, 2026 |
| mod_http2 · amzn 2023 | 2.0.39-1.amzn2023.0.1 | ALAS2023-2026-1724 | May 25, 2026 |
| mod_http2-debuginfo · amzn 2023 | 2.0.39-1.amzn2023.0.1 | ALAS2023-2026-1724 | May 25, 2026 |
| mod_http2-debugsource · amzn 2023 | 2.0.39-1.amzn2023.0.1 | ALAS2023-2026-1724 | May 25, 2026 |
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