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Oracle Linux 8 : httpd:2.4 (ELSA-2026-25090)

high Nessus Plugin ID 321487

Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-25090 advisory.

 - Resolves: RHEL-173558 - httpd:2.4/httpd: Apache HTTP Server mod_proxy_ajp:
 Arbitrary code execution via heap-based buffer overflow (CVE-2026-28780)
 - Resolves: RHEL-175074 - httpd:2.4/httpd: NULL pointer dereference can cause a child process crash (CVE-2026-33007)
 - Resolves: RHEL-175088 - httpd:2.4/httpd: off-by-one out-of-bounds reads in AJP getter functions (CVE-2026-33857)
 - Resolves: RHEL-175620 - httpd:2.4/httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)
 - Resolves: RHEL-175055 - httpd: heap-based buffer over-read and memory disclosure in ajp_parse_data() (CVE-2026-34059)
 - Resolves: RHEL-135054 - httpd: Apache HTTP Server: mod_userdir+suexec bypass via AllowOverride FileInfo (CVE-2025-66200)
 - Resolves: RHEL-135039 - httpd: Apache HTTP Server: CGI environment variable override (CVE-2025-65082)
 - Resolves: RHEL-134471 - httpd: Apache HTTP Server: Server Side Includes adds query string to #exec cmd=... (CVE-2025-58098)
 - Resolves: RHEL-127073 - mod_ssl: allow more fine grained SSL SNI vhost check to avoid unnecessary 421 errors after CVE-2025-23048 fix
 - Resolves: RHEL-99944 - CVE-2025-49812 httpd: HTTP Session Hijack via a TLS upgrade
 - Resolves: RHEL-99969 - CVE-2024-47252 httpd: insufficient escaping of user-supplied data in mod_ssl
 - Resolves: RHEL-99961 - CVE-2025-23048 httpd: access control bypass by trusted clients is possible using TLS 1.3 session resumption
 - Resolves: RHEL-46040 - httpd:2.4/httpd: Security issues via backend applications whose response headers are malicious or exploitable (CVE-2024-38476)
 - Resolves: RHEL-53022 - Regression introduced by CVE-2024-38474 fix
 - Resolves: RHEL-45812 - httpd:2.4/httpd: Substitution encoding issue in mod_rewrite (CVE-2024-38474)
 - Resolves: RHEL-45785 - httpd:2.4/httpd: Encoding problem in mod_proxy (CVE-2024-38473)
 - Resolves: RHEL-45777 - httpd:2.4/httpd: Improper escaping of output in mod_rewrite (CVE-2024-38475)
 - Resolves: RHEL-45758 - httpd:2.4/httpd: null pointer dereference in mod_proxy (CVE-2024-38477)
 - Resolves: RHEL-45743 - httpd:2.4/httpd: Potential SSRF in mod_rewrite (CVE-2024-39573)
 - Resolves: RHEL-31857 - httpd:2.4/httpd: HTTP response splitting (CVE-2023-38709)

 mod_http2
 - Resolves: RHEL-182418 - mod_http2: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack (CVE-2026-49975)
 - Resolves: RHEL-166277 - httpd:2.4/httpd: Apache HTTP Server: HTTP/2 DoS by Memory Increase (CVE-2025-53020)
 - Resolves: RHEL-105186 - httpd:2.4/httpd: untrusted input from a client causes an assertion to fail in the Apache mod_proxy_http2 module (CVE-2025-49630)
 - Resolves: RHEL-58454 - mod_proxy_http2 failures after CVE-2024-38477 fix
 - Resolves: RHEL-29817 - httpd:2.4/mod_http2: httpd: CONTINUATION frames DoS (CVE-2024-27316)
 - Resolves: RHEL-13367 - httpd:2.4/mod_http2: reset requests exhaust memory (incomplete fix of CVE-2023-44487)(CVE-2023-45802)
 - Resolves: #2177748 - CVE-2023-25690 httpd:2.4/httpd: HTTP request splitting with mod_rewrite and mod_proxy
 - Resolves: RHEL-134487 - httpd:2.4/httpd: Apache HTTP Server: mod_md (ACME), unintended retry intervals (CVE-2025-55753)

Tenable has extracted the preceding description block directly from the Oracle Linux 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://linux.oracle.com/errata/ELSA-2026-25090.html

Plugin Details

Severity: High

ID: 321487

File Name: oraclelinux_ELSA-2026-25090.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/18/2026

Updated: 6/18/2026

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: p-cpe:/a:oracle:linux:mod_md, p-cpe:/a:oracle:linux:httpd-devel, p-cpe:/a:oracle:linux:mod_session, p-cpe:/a:oracle:linux:httpd-filesystem, p-cpe:/a:oracle:linux:httpd-manual, p-cpe:/a:oracle:linux:mod_ldap, p-cpe:/a:oracle:linux:mod_proxy_html, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:mod_ssl, p-cpe:/a:oracle:linux:mod_http2, p-cpe:/a:oracle:linux:httpd, p-cpe:/a:oracle:linux:httpd-tools

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/17/2026

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-49975