RHEL 9 : fence-agents (RHSA-2026:94523)
| Reporter | Title | Published | Views | Family All 1000 |
|---|---|---|---|---|
| Security Bulletin: IBM Edge Data Collector uses multiple third-party libraries that are vulnerable to several security vulnerabilities. | 3 Nov 202610:40 | – | ibm | |
| Exploit for CVE-2026-102268 | 2 Oct 202613:12 | – | githubexploit | |
| Amazon Linux 2023 : python3-jwt, python3-jwt+crypto (ALAS2023-2026-3298) | 25 Oct 202600:00 | – | nessus | |
| Oracle Linux 10 : fence-agents (ELSA-2026-94501) | 3 Nov 202600:00 | – | nessus | |
| Photon OS 5.0: Python3 PHSA-2026-5.0-92-1040 | 2 Nov 202600:00 | – | nessus | |
| RHEL 9 : Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update (Important) (RHSA-2026:87004) | 21 Oct 202600:00 | – | nessus | |
| Important: python-jwt | 24 Oct 202600:00 | – | amazon | |
| Critical: fence-agents security update | 3 Nov 202600:00 | – | almalinux | |
| PyJWT HMAC Algorithm Use-After-Free | 2 Oct 202600:00 | – | bdu_fstec | |
| PyJWT jwt/utils.py Function Disclosure | 2 Oct 202600:00 | – | bdu_fstec |
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##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:94523. The text
# itself is copyright (C) Red Hat, Inc.
##
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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):
* pyjwt: pyjwt: Authentication bypass via empty HMAC key acceptance (CVE-2026-102266)
* pyjwt: PyJWT: Authentication bypass via improper public key validation (CVE-2026-102268)
* pyjwt: PyJWT: Authentication bypass via acceptance of DER public keys as HMAC secrets (CVE-2026-102271)
* pyjwt: pyjwt: Verification key substitution via unvalidated JWKS redirects (CVE-2026-102267)
* pyjwt: pyjwt: Token forgery via improper Unicode byte-order mark handling (CVE-2026-102272)
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.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
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{'reference':'fence-virtd-multicast-4.10.0-86.el9_6.23', 'sp':'6', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
{'reference':'fence-virtd-serial-4.10.0-86.el9_6.23', 'sp':'6', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
{'reference':'fence-virtd-tcp-4.10.0-86.el9_6.23', 'sp':'6', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ha-cloud-support-4.10.0-86.el9_6.23', 'sp':'6', 'cpu':'ppc64le', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ha-cloud-support-4.10.0-86.el9_6.23', 'sp':'6', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
]
}
];
var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);
var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');
var flag = 0;
var repo_relative_urls;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
# Check that the target release is equal to the affected release
if (!empty_or_null(constraint['release'])){
if (constraint['release'] != os_release) continue;
}
if (!empty_or_null(constraint['sp'])){
if (constraint['sp'] != os_sp) continue;
}
if (!empty_or_null(constraint['repo_relative_urls'])) repo_relative_urls = constraint['repo_relative_urls'];
foreach var pkg ( constraint['pkgs'] ) {
reference = NULL;
sp = NULL;
_cpu = NULL;
el_string = NULL;
rpm_spec_vers_cmp = NULL;
epoch = NULL;
allowmaj = NULL;
exists_check = NULL;
cves = NULL;
if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
if (reference &&
rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
(applicable_repo_urls || (!exists_check || rpm_exists(rpm:exists_check))) &&
rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
}
}
if (flag)
{
var subscription_caveat = '\n' +
'NOTE: This vulnerability check contains fixes that apply to\n' +
'packages only available in the Red Hat Enterprise Linux\n' +
'Extended Update Support repository.\n' +
'Access to this repository requires a paid RHEL subscription.\n';
var extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
else extra = subscription_caveat + rpm_report_get();
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : extra
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'fence-agents-aliyun / fence-agents-all / fence-agents-amt-ws / etc');
}
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03 Nov 2026 00:00Current
7.2High risk
Vulners AI Score7.2
CVSS 3.19.1
EPSS0.00236
SSVC