CVE-2026-48142Patch(f5 / dos)
LOWCVSS 6.3 · MEDIUMSignal is active with 1 mentions in latest observed window
Immediate actions
- Patch f5 dos systems immediately
Recommended action window: Monitor and triage in normal cycle
NVD 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.
Sources & remediation
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
Are you affected?
If you run products in this scope, you should treat this CVE as relevant to your environment.
- dos
- nginx_gateway_fabric
- nginx_ingress_controller
- nginx_instance_manager
Threat summary
- Patch or workaround signal is available
- 5 mentions across 3 observed days
- Momentum state: stable
What's happening
- Patch or workaround mentioned in 3 signals
- Technical details provided in 1 signal
- General: 2 classified signals
- Peaked 2d ago at 2 mentions (2026-06-17); latest day: 1
- 5 total mentions across 3 days
Affected systems
2 versions affected across 7 products
Deep dive
Activity timeline5 mentions / 3d
Signal classification2 categories
Referenced assets4 URLs
Classification over time
| Date | Total | Labels |
|---|
| 2026-06-17 | 2 | General1Patch1 |
| 2026-06-18 | 2 | General1Patch1 |
| 2026-06-25 | 1 | Patch1 |
CPE platform detail15 entries
15 of 15 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | f5 | dos | - | nginx | - |
| App | f5 | dos | 4.9.0 | nginx | - |
| App | f5 | nginx_gateway_fabric | - | - | - |
| App | f5 | nginx_ingress_controller | - | - | - |
| App | f5 | nginx_instance_manager | - | - | - |
| App | f5 | nginx_open_source | - | - | - |
| App | f5 | nginx_plus | - | - | - |
| App | f5 | nginx_plus | - | - | - |
| App | f5 | nginx_plus | r36 | - | - |
| App | f5 | nginx_plus | r36 | - | - |
| App | f5 | nginx_plus | r36 | - | - |
| App | f5 | nginx_plus | r36 | - | - |
| App | f5 | nginx_plus | r36 | - | - |
| App | f5 | nginx_plus | r36 | - | - |
| App | f5 | waf | - | nginx | - |