Signal
Critical vulnerabilities found in libarchive affecting multiple Ubuntu LTS versions
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-05-21 14:28 UTCUpdated 2026-05-21 23:58 UTC
rss
cvesecurityadvisorypatchubuntulibarchive
Trend in the last 24h
Source links open
Source links and full evidence are open here. Archive history, compare-over-time, alerts, exports, API, integrations, and workflow are paid.
No card needed for the free brief.
Evidence trail (top sources)
top sources (2 domains)domains are deduped. counts indicate coverage, not truth.2 top sources shown
limited source diversity in top sources
Overview
Several high-severity security vulnerabilities have been identified in libarchive, impacting multiple Ubuntu Long Term Support (LTS) releases from 14.04 to 26.04.
Entities
Ubuntulibarchive
Score total
0.84
Momentum 24h
2
Posts
2
Origins
2
Source types
1
Duplicate ratio
0%
Why now
- Patches were released on May 21, 2026, making immediate updates necessary.
- The vulnerabilities allow severe impacts including arbitrary code execution.
- Awareness helps organizations prioritize remediation efforts.
Why it matters
- The vulnerabilities have critical severity with CVSS up to 9.8, risking system compromise.
- Multiple widely used Ubuntu LTS versions are affected, increasing exposure.
- Prompt patching is essential to prevent exploitation by attackers.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: high
Recurring claims
- libarchive contains critical vulnerabilities allowing memory disclosure, denial of service, and arbitrary code execution.
How sources frame it
- Ubuntu Security Notices: neutral
All evidence
All evidence
libarchive: CVSS (Max): 9.8
AusCERT - Bulletins · portal.auscert.org.au · 2026-05-21 23:58 UTC
USN-8292-1: libarchive vulnerabilities
Ubuntu Security Notices · ubuntu.com · 2026-05-21 14:28 UTC
Show filters & breakdown
Posts loaded: 0Publishers: 2Origin domains: 2Duplicates: -
Showing 2 / 0
Top publishers (this list)
- AusCERT - Bulletins (1)
- Ubuntu Security Notices (1)
Top origin domains (this list)
- portal.auscert.org.au (1)
- ubuntu.com (1)