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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-42934

NGINX ngx_http_charset_module vulnerability

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
f5

Description

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset, source_charset, and charset_map and proxy_pass with disabled buffering ("off") directives are configured, unauthenticated attackers can send requests that with conditions beyond the attackers' 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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

F5 NGINX Plus

Default version status: unknown

  • R37 to < *unaffected
  • R36 to < R36 P4affected
  • R32 to < R32 P6affected

F5 NGINX Open Source

Default version status: unaffected

  • 1.31.0 to < *unaffected
  • 0.3.50 to < 1.30.1affected

References