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OpenAdvisories
High ALSA-2026:1240 3 CVEs

Important: fence-agents security update

Published Jan 26, 2026 · Updated Oct 29, 2026

Summary

The fence-agents packages provide a collection of scripts for handling remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

Security Fix(es):

* urllib3: urllib3: Unbounded decompression chain leads to resource exhaustion (CVE-2025-66418)
* urllib3: urllib3 Streaming API improperly handles highly compressed data (CVE-2025-66471)
* urllib3: urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API) (CVE-2026-21441)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 48

ReleasePackageFixed in
AlmaLinux · 8 fence-agents-aliyun 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-all 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-amt-ws 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-apc 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-apc-snmp 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-aws 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-azure-arm 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-bladecenter 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-brocade 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-cisco-mds 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-cisco-ucs 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-common 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-compute 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-drac5 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-eaton-snmp 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-emerson 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-eps 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-gce 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-heuristics-ping 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-hpblade 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ibm-powervs 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ibm-vpc 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ibmblade 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ifmib 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ilo-moonshot 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ilo-mp 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ilo-ssh 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ilo2 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-intelmodular 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ipdu 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-ipmilan 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-kdump 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-kubevirt 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-lpar 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-mpath 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-nutanix-ahv 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-openstack 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-redfish 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-rhevm 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-rsa 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-rsb 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-sbd 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-scsi 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-virsh 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-vmware-rest 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-vmware-soap 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-wti 4.2.1-129.el8_10.20
AlmaLinux · 8 fence-agents-zvm 4.2.1-129.el8_10.20

Vulnerabilities 3

References

  • report
    https://access.redhat.com/security/cve/CVE-2025-66418
  • report
    https://access.redhat.com/security/cve/CVE-2025-66471
  • report
    https://access.redhat.com/security/cve/CVE-2026-21441
  • report
    https://bugzilla.redhat.com/2419455
  • report
    https://bugzilla.redhat.com/2419467
  • report
    https://bugzilla.redhat.com/2427726
  • advisory
    https://errata.almalinux.org/8/ALSA-2026-1240.html