CVE-2026-4426
A remote, anonymous attacker can exploit multiple vulnerabilities in libarchive to disclose information and to create a Denial-of-Service condition.
CSIRTS triage
- What
- A remote, anonymous attacker can exploit multiple vulnerabilities in libarchive to disclose information and to create a Denial-of-Service condition.
- Who is affected
- Deployments of libarchive are affected by these vulnerabilities.
- Urgency
- Remediation is urgent due to the potential for information disclosure and Denial-of-Service.
- Action
- Update libarchive to the latest version to address these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Advisory coverage (1)
- medium[UPDATE] [medium] libarchive: Multiple vulnerabilities allow information disclosure and DoScert-bund · 2026-07-06
External references
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[](https://www.csirts.com/cve/CVE-2026-4426)