CVE-2026-23918
Publication date 5 May 2026
Last updated 6 May 2026
Ubuntu priority
Description
http2: double free and possible RCE on early reset
Read the notes from the security team
Why is this CVE high priority?
This a potential remote code execution issue
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| apache2 | 26.04 LTS resolute |
Vulnerable
|
| 25.10 questing |
Not affected
|
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
Notes
mdeslaur
Per upstream, this only affects Apache httpd 2.4.66. After investigation, the core issue is still in earlier releases, but without the memory allocator change in mod_http2 v2.0.33 which went into httpd 2.4.66, it does not result in a double-free. Marking releases earlier than resolute as not-affected.