CVE-2026-48142
Publication date 19 June 2026
Last updated 25 June 2026
Ubuntu priority
Description
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When content is served or proxied through a location block with both source_charset utf-8; and a charset directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests (in conjunction with conditions beyond their control) to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| nginx | 26.04 LTS resolute |
Fixed 1.28.3-2ubuntu1.6
|
| 25.10 questing |
Fixed 1.28.0-6ubuntu1.8
|
|
| 24.04 LTS noble |
Fixed 1.24.0-2ubuntu7.13
|
|
| 22.04 LTS jammy |
Fixed 1.18.0-6ubuntu14.16
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Severity score breakdown
CVSS version:
Base score
6.3 · Medium
Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Base score
4.8 · Medium
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
References
Related Ubuntu Security Notices (USN)
- USN-8458-1
- nginx vulnerabilities
- 22 June 2026