CVE-2026-42934
4.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| F5 | NGINX Plus | R37 < * | unaffected |
| F5 | NGINX Plus | R36 < R36 P4 | affected |
| F5 | NGINX Plus | R32 < R32 P6 | affected |
| F5 | NGINX Open Source | 1.31.0 < * | unaffected |
| F5 | NGINX Open Source | 0.3.50 < 1.30.1 | affected |
Weaknesses
- CWE-125: CWE-125 Out-of-bounds Read
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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