F5 NGINX Plus/NGINX Open Source ngx_http_slice_module uninitialized pointer

Summaryinfo

A vulnerability, which was classified as critical, has been found in F5 NGINX Plus and NGINX Open Source. Affected by this issue is some unknown functionality of the component ngx_http_slice_module. This manipulation causes uninitialized pointer. This vulnerability appears as CVE-2026-60005. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in F5 NGINX Plus and NGINX Open Source (affected version unknown). It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component ngx_http_slice_module. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. The CWE definition for the vulnerability is CWE-824. The product accesses or uses a pointer that has not been initialized. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at my.f5.com. This vulnerability is known as CVE-2026-60005 since 07/08/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/15/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Web Server

Vendor

• F5

Name

• NGINX Open Source
• NGINX Plus

License

• commercial

Website

• Vendor: https://f5.com/

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