Bug 2489858 (CVE-2026-48142) - CVE-2026-48142 nginx: NGINX: Memory disclosure or denial of service via ngx_http_charset_module heap buffer over-read
Summary: CVE-2026-48142 nginx: NGINX: Memory disclosure or denial of service via ngx_h...
Keywords:
Status: NEW
Alias: CVE-2026-48142
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2492052
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-17 16:01 UTC by OSIDB Bzimport
Modified: 2026-06-23 23:26 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-06-17 16:01:34 UTC 
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.
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