Libevent: Prior to 2.2.2-alpha, libev ...) (CVE-2026-63380)
A vulnerability exists in libevent, an event notification library, affecting multiple stable versions prior to 2.2.2-alpha. The issue is identified as CVE-2026-63380 and impacts various Ubuntu LTS releases. The vulnerability requires local access with low privileges and high attack complexity, and it can lead to high impact on availability. No known exploits are reported in the wild. The severity is assessed as medium based on the CVSS 4.0 vector.
AI Analysis
Technical Summary
CVE-2026-63380 is a vulnerability in libevent versions prior to 2.2.2-alpha. The flaw affects multiple stable releases of libevent distributed with Ubuntu LTS versions from 14.04 through 26.04. The CVSS 4.0 vector indicates the attack requires local access (AV:L), high attack complexity (AC:H), and privileges at a low level (PR:L). The vulnerability does not require user interaction and impacts availability with high severity (VA:H). No cloud service is involved, and no known exploits are currently reported.
Potential Impact
The vulnerability can lead to a high impact on the availability of systems running affected libevent versions. Exploitation requires local access with low privileges and has a high attack complexity, limiting the ease of exploitation. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or official fixes are provided in the data, users should monitor vendor advisories for updates and consider upgrading to libevent versions 2.2.2-alpha or later when available.
Libevent: Prior to 2.2.2-alpha, libev ...) (CVE-2026-63380)
Description
A vulnerability exists in libevent, an event notification library, affecting multiple stable versions prior to 2.2.2-alpha. The issue is identified as CVE-2026-63380 and impacts various Ubuntu LTS releases. The vulnerability requires local access with low privileges and high attack complexity, and it can lead to high impact on availability. No known exploits are reported in the wild. The severity is assessed as medium based on the CVSS 4.0 vector.
CVSS v4.0
Affected software
pkg:deb/ubuntu/libevent?arch=source&distro=trustypkg:deb/ubuntu/libevent?arch=source&distro=xenialpkg:deb/ubuntu/libevent?arch=source&distro=bionicpkg:deb/ubuntu/libevent?arch=source&distro=focalpkg:deb/ubuntu/libevent?arch=source&distro=jammypkg:deb/ubuntu/libevent?arch=source&distro=noblepkg:deb/ubuntu/libevent?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-63380 is a vulnerability in libevent versions prior to 2.2.2-alpha. The flaw affects multiple stable releases of libevent distributed with Ubuntu LTS versions from 14.04 through 26.04. The CVSS 4.0 vector indicates the attack requires local access (AV:L), high attack complexity (AC:H), and privileges at a low level (PR:L). The vulnerability does not require user interaction and impacts availability with high severity (VA:H). No cloud service is involved, and no known exploits are currently reported.
Potential Impact
The vulnerability can lead to a high impact on the availability of systems running affected libevent versions. Exploitation requires local access with low privileges and has a high attack complexity, limiting the ease of exploitation. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or official fixes are provided in the data, users should monitor vendor advisories for updates and consider upgrading to libevent versions 2.2.2-alpha or later when available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-63380
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:14.04:LTS","Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 4.0
Threat ID: 6a8c4c54acd9273b499be7dc
Added to database: 08/24/2026, 13:51:16 UTC
Last enriched: 08/24/2026, 14:07:58 UTC
Last updated: 08/24/2026, 22:52:13 UTC
Views: 3
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