# CVE-2026-42946

## Summary

- **CVE ID:** CVE-2026-42946
- **Severity:** HIGH
- **CVSS Score:** 8.3 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-789, CWE-823
- **Published:** May 13, 2026
- **Last Modified:** May 13, 2026

## Description

A vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result in excessive memory allocation or an over-read of data. When scgi_pass or uwsgi_pass is configured, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to read the memory of the NGINX worker process or restart it.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

## Affected Products

- F5 — NGINX Plus (R37)
- F5 — NGINX Plus (R36)
- F5 — NGINX Plus (R32)
- F5 — NGINX Open Source (1.31.0)
- F5 — NGINX Open Source (0.8.42)

## References

- [CNA](https://my.f5.com/manage/s/article/K000161027)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.93%
- **EPSS Percentile:** 58.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._