Detections
Analytics
AlmaLinux 9 : nginx:1.24 (ALSA-2026:6923)
high Nessus Plugin ID 305949
Synopsis
The remote AlmaLinux host is missing one or more security updates.Description
The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:6923 advisory.* nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files (CVE-2026-32647)
* NGINX: NGINX: Denial of Service or file modification via buffer overflow in ngx_http_dav_module (CVE-2026-27654)
* NGINX: NGINX: Denial of Service due to memory corruption via crafted MP4 file (CVE-2026-27784)
* NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled (CVE-2026-27651)
Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
Plugin Details
Severity: High
ID: 305949
File Name: alma_linux_ALSA-2026-6923.nasl
Version: 1.1
Type: Local
Family: Alma Linux Local Security Checks
Published: 4/10/2026
Updated: 4/10/2026
Supported Sensors: Continuous Assessment, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 8.5
Temporal Score: 6.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:C
CVSS Score Source: CVE-2026-27654
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2026-27784
CVSS v4
Risk Factor: High
Base Score: 8.5
Threat Score: 7.1
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score Source: CVE-2026-27784
Vulnerability Information
CPE: p-cpe:/a:alma:linux:nginx-mod-devel, cpe:/o:alma:linux:9::appstream, p-cpe:/a:alma:linux:nginx-mod-http-image-filter, p-cpe:/a:alma:linux:nginx-filesystem, cpe:/o:alma:linux:9::supplementary, p-cpe:/a:alma:linux:nginx-mod-stream, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::resilientstorage, p-cpe:/a:alma:linux:nginx-mod-http-perl, cpe:/o:alma:linux:9::sap_hana, p-cpe:/a:alma:linux:nginx-mod-mail, cpe:/o:alma:linux:9::sap, cpe:/o:alma:linux:9::crb, p-cpe:/a:alma:linux:nginx-all-modules, p-cpe:/a:alma:linux:nginx-mod-http-xslt-filter, p-cpe:/a:alma:linux:nginx-core, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9, p-cpe:/a:alma:linux:nginx, cpe:/o:alma:linux:9::nfv, cpe:/o:alma:linux:9::baseos
Required KB Items: Host/local_checks_enabled, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/7/2026
Vulnerability Publication Date: 3/24/2026
Reference Information
CVE: CVE-2026-27651, CVE-2026-27654, CVE-2026-27784, CVE-2026-32647