What is CVE-2026-60005?

CVE-2026-60005 is a high-severity vulnerability in F5 nginx App Protect Waf, classified under Use of Uninitialized Resource. CVSS score: 8.2/10. Published 2026-07-15.

How severe is CVE-2026-60005?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in F5 nginx App Protect Waf

CVE-2026-60005

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_slice_module module. When the slice directive and unnamed regex captures are configured or when a background cache update happens, unauthenticated attackers can send requests that may cause uninitialized memory access in the NGINX worker process, leading to limited disclosure of memory or a restart. Impact: This vulnerability may allow remote, unauthenticated attackers to have limited control to disclose memory contents or restart the NGINX worker process. There is no control plane exposure; this is a data plane issue only. Note: The ngx_http_slice_module module is not enabled by default; it's enabled with the --with-http_slice_module configuration parameter. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Published 2026-07-15 · last modified 2026-08-11.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (43.7th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.005 · change: -0.002

Affected products

F5 nginx App Protect Waf
F5 nginx Gateway Fabric
F5 nginx Ingress Controller — versions 4.0.0, 4.0.1
F5 nginx Instance Manager
F5 nginx Open Source — versions 1.31.2, 1.15.8
F5 nginx Open Source — versions 1.31.2
F5 nginx Plus — versions 37.0.0.1, R36, R33
F5 nginx Plus — versions 37.0.0, r36
F5 Waf

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

References

my.f5.com/manage/s/article/K000162100 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-60005?: CVE-2026-60005 is a high-severity vulnerability in F5 nginx App Protect Waf, classified under Use of Uninitialized Resource. CVSS score: 8.2/10. Published 2026-07-15.
How severe is CVE-2026-60005?: High severity. CVSS v3 base score is 8.2 out of 10.