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High 7.5Published Mar 13, 2026

CVE-2026-4111Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive

Updated under an hour ago ()

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It affects Red Hat Enterprise Linux 10 and 10 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.

CVSS
7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-835
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
redhat
NVD analysis
Awaiting Analysis
Record last updated
Oct 14, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
from 0:3.7.7-5.el10_1 not affected
CNA record
from 0:3.7.7-5.el10_0 not affected
CNA record
from 0:3.5.3-2.el9_0.3 not affected
CNA record
from 0:3.5.3-4.el9_4.2 not affected
CNA record
from 413.92.202604080111-0 not affected
CNA record
from 1791459707 not affected
CNA record
Red Hat Red Hat AI Inference Server 3.2
redhat:ai_inference_server
from 1780681984 not affected
CNA record
from 1775668717 not affected
CNA record
from 3.8.7-1.hum1 not affected
CNA record
from 1776868961 not affected
CNA record
from 1776868774 not affected
CNA record
from 0:3.7.7-5.el10_1 not affected
CISA ADP
from 0:3.7.7-5.el10_0 not affected
CISA ADP
from 0:3.5.3-2.el9_0.3 not affected
CISA ADP
from 0:3.5.3-4.el9_4.2 not affected
CISA ADP
from 413.92.202604080111-0 not affected
CISA ADP
Red Hat Red Hat AI Inference Server 3.2
redhat:ai_inference_server
from 1780681984 not affected
CISA ADP
from 1775668717 not affected
CISA ADP
from 3.8.7-1.hum1 not affected
CISA ADP
from 1776868961 not affected
CISA ADP
from 1776868774 not affected
CISA ADP

References

  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
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  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat
  • vendor-advisory, x-refsource-redhat

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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