UBUNTU-CVE-2026-48142

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.

Affected Systems

• ubuntu•nginx

  all | all | all | all | all

References (5)

• https://ubuntu.com/security/CVE-2026-48142
• https://www.cve.org/CVERecord?id=CVE-2026-48142
• https://my.f5.com/manage/s/article/K000161585
• https://github.com/nginx/nginx/commit/319a0bff157b15d9061f4712b2edbe6fdd2dee66
• https://github.com/nginx/nginx/commit/60c4243eb8775d51662a01def8a7dad5d9fb34a7