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CVE-2026-59886VulnerabilityPublished Updated

Red Hat Security Advisory: resource-agents security update

Affects Red Hat resource-agentsSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 11:52 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

AI-suggested

Red Hat has released updated resource-agents packages that fix this vulnerability. Users of affected Red Hat Enterprise Linux 7 Extended Life Cycle Support variants should apply the security update as described in Red Hat advisory RHSA-2026:59329 and the referenced update article (https://access.redhat.com/articles/11258). Applying the official update fully mitigates the issue. No additional or alternative mitigations are indicated by the vendor.

Description

A security update for the resource-agents packages in Red Hat Enterprise Linux addresses a denial of service vulnerability in the pyasn1 library. The flaw (CVE-2026-59886) involves crafted ASN.1 REAL values that can cause a denial of service. The resource-agents scripts support high-availability environments by interfacing with service managers like Pacemaker and RGManager. This update is rated as important by Red Hat Product Security and applies to Extended Life Cycle Support 7 versions of Red Hat Enterprise Linux for various architectures and specialized editions.

References

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