Detections
Analytics
nginx 1.30.x < 1.30.4 / 1.31.2 < 1.31.3 Multiple Vulnerabilities
high Nessus Plugin ID 330084
Synopsis
The remote web server is affected by multiple vulnerabilities.Description
According to its Server response header, the installed version of nginx is 1.30.0 prior to 1.30.4, or 1.31.2 prior to 1.31.3. It is, therefore, affected by multiple vulnerabilities:- A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and a string expression references the map's regex capture variables before referencing the map output variable.
Alternatively, the same result could be achieved by using a non-cacheable variable in a string expression under certain conditions. An unauthenticated attacker along with conditions beyond their control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system or to possibly trigger a code execution. There is no control plane exposure; this is a data plane issue only. (CVE-2026-42533)
- NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ssi_module module. This vulnerability may exist when the Server-Side Includes (SSI), proxy_pass, and proxy_buffering off directives are configured.
With this configuration, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to cause a use-after-free in the NGINX worker process. This issue may lead to limited modification of memory or a restart of the NGINX worker process. Impact: This vulnerability may allow remote attackers to have limited control to modify memory contents or restart the NGINX worker process. There is no control plane exposure; this is a data plane issue only. (CVE-2026-56434)
- 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. (CVE-2026-60005)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to nginx 1.30.4, 1.31.3 or later.See Also
https://my.f5.com/manage/s/article/K000162097
https://my.f5.com/manage/s/article/K000162098
Plugin Details
Severity: High
ID: 330084
File Name: nginx-CVE-2026-60005.nasl
Version: 1.1
Type: Combined
Agent: unix
Family: Web Servers
Published: 7/27/2026
Updated: 7/27/2026
Configuration: Enable paranoid mode
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.9
Percentile: 99.35
CVSS v2
Risk Factor: High
Base Score: 8.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:C
CVSS Score Source: CVE-2026-60005
CVSS v3
Risk Factor: High
Base Score: 8.2
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS v4
Risk Factor: High
Base Score: 8.8
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
CPE: cpe:/a:nginx:nginx
Required KB Items: Settings/ParanoidReport, installed_sw/nginx
Patch Publication Date: 7/15/2026
Vulnerability Publication Date: 7/15/2026
Reference Information
CVE: CVE-2026-42533, CVE-2026-56434, CVE-2026-60005
IAVA: 2026-A-0754