Detections
Analytics
AlmaLinux 10 : libevent (ALSA-2026:67909)
critical Nessus Plugin ID 346873
Synopsis
The remote AlmaLinux host is missing one or more security updates.Description
The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67909 advisory.* libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)
* libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)
* libevent: Libevent: Memory corruption due to use-after-free (CVE-2026-63381)
* libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header` (CVE-2026-63384)
* libevent ev[http:](http:) Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)
* libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)
* libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)
* libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning (CVE-2026-63379)
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 libevent, libevent-devel and / or libevent-doc packages.See Also
Plugin Details
Severity: Critical
ID: 346873
File Name: alma_linux_ALSA-2026-67909.nasl
Version: 1.1
Type: Local
Family: Alma Linux Local Security Checks
Published: 9/17/2026
Updated: 9/17/2026
Supported Sensors: Continuous Assessment, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.17
CVSS v2
Risk Factor: High
Base Score: 9
Temporal Score: 6.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C
CVSS Score Source: CVE-2026-63387
CVSS v3
Risk Factor: High
Base Score: 8.4
Temporal Score: 7.3
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS Score Source: CVE-2026-63388
CVSS v4
Risk Factor: Critical
Base Score: 9.2
Threat Score: 7.1
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:N
CVSS Score Source: CVE-2026-63385
Vulnerability Information
CPE: cpe:/o:alma:linux:10, cpe:/o:alma:linux:10::appstream, cpe:/o:alma:linux:10::baseos, cpe:/o:alma:linux:10::highavailability, cpe:/o:alma:linux:10::nfv, cpe:/o:alma:linux:10::powertools, cpe:/o:alma:linux:10::realtime, cpe:/o:alma:linux:10::resilientstorage, cpe:/o:alma:linux:10::sap, cpe:/o:alma:linux:10::sap_hana, cpe:/o:alma:linux:10::supplementary, p-cpe:/a:alma:linux:libevent-devel, p-cpe:/a:alma:linux:libevent-doc, p-cpe:/a:alma:linux:libevent
Required KB Items: Host/local_checks_enabled, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 9/16/2026
Vulnerability Publication Date: 8/20/2026
Reference Information
CVE: CVE-2026-63379, CVE-2026-63381, CVE-2026-63382, CVE-2026-63383, CVE-2026-63384, CVE-2026-63385, CVE-2026-63387, CVE-2026-63388