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AlmaLinux 8 : httpd:2.4 (ALSA-2026:25090)

high Nessus Plugin ID 320643

Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:25090 advisory.

 * httpd: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack (CVE-2026-49975)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://errata.almalinux.org/8/ALSA-2026-25090.html

https://access.redhat.com/errata/RHSA-2026:25090

Plugin Details

Severity: High

ID: 320643

File Name: alma_linux_ALSA-2026-25090.nasl

Version: 1.1

Type: Local

Published: 6/11/2026

Updated: 6/11/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-49975

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:alma:linux:8, p-cpe:/a:alma:linux:httpd, p-cpe:/a:alma:linux:httpd-devel, p-cpe:/a:alma:linux:httpd-filesystem, p-cpe:/a:alma:linux:httpd-manual, p-cpe:/a:alma:linux:httpd-tools, p-cpe:/a:alma:linux:mod_ldap, p-cpe:/a:alma:linux:mod_proxy_html, p-cpe:/a:alma:linux:mod_session, p-cpe:/a:alma:linux:mod_ssl, p-cpe:/a:alma:linux:mod_http2, p-cpe:/a:alma:linux:mod_md, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8::baseos, cpe:/o:alma:linux:8::appstream, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::resilientstorage, cpe:/o:alma:linux:8::sap, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::supplementary

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: 6/10/2026

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-49975

CWE: 409

RHSA: 2026:25090