CVE-2026-42934
MEDIUM
MEDIUM
Priority: 0.05
BB Relevance:
73/100
Published: 2026-05-13
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
X
AT:
Present
VC:
Low
VI:
None
VA:
Low
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.
Weakness Classification (1)
Affected Software (14)
| Vendor | Product | Version |
|---|---|---|
| f5 | dos | 4.3.0 – 4.7.0 |
| f5 | dos | 4.8.0 |
| f5 | nginx_gateway_fabric | 1.3.0 – 1.6.2 |
| f5 | nginx_gateway_fabric | 2.0.0 – 2.6.0 |
| f5 | nginx_ingress_controller | 3.5.0 – 3.7.2 |
| f5 | nginx_ingress_controller | 4.0.0 – 4.0.1 |
| f5 | nginx_ingress_controller | 5.0.0 – 5.4.2 |
| f5 | nginx_instance_manager | 2.16.0 – 2.22.0 |
| f5 | nginx_open_source | 0.3.50 – 0.9.7 |
| f5 | nginx_open_source | 1.0.0 – 1.30.0 |
| f5 | nginx_plus | r32 – r36 |
| f5 | waf | 4.9.0 – 4.16.0 |
| f5 | waf | 5.1.0 – 5.8.0 |
| f5 | waf | 5.9.0 – 5.12.1 |
References & Advisories (1)
Mitigation
Vendor Advisory