What is RHSA-2026:58811?

RHSA-2026:58811 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: resource-agents security update

Which CVE IDs does RHSA-2026:58811 cover?

RHSA-2026:58811 covers the following CVE IDs: CVE-2026-59886. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:58811?

RHSA-2026:58811 has a CVSS v3 base score of 7.5, published by Red Hat Product Security.

Which products are affected by RHSA-2026:58811?

RHSA-2026:58811 affects 22 products, including: Red Hat Enterprise Linux High Availability E4S (v.8.8); Red Hat Enterprise Linux High Availability TUS (v.8.8); resource-agents-0:4.9.0-40.el8_8.21.ppc64le as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8); resource-agents-0:4.9.0-40.el8_8.21.src as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8); resource-agents-0:4.9.0-40.el8_8.21.src as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8); and others — see the full list on the advisory page.

RHSA-2026:58811HighCVSS 7.5

Red Hat Security Advisory: resource-agents security update

Vendor

Red Hat Product Security

Published

August 24, 2026

Last Modified

August 25, 2026

🔗 CVE IDs covered (1)

CVE-2026-59886 →

📋 Description

CVE-2026-59886 — pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

🎯 Affected products22

Red Hat Enterprise Linux High Availability E4S (v.8.8)
Red Hat Enterprise Linux High Availability TUS (v.8.8)
resource-agents-0:4.9.0-40.el8_8.21.ppc64le as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-0:4.9.0-40.el8_8.21.src as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-0:4.9.0-40.el8_8.21.src as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8)
resource-agents-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8)
resource-agents-aliyun-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-aliyun-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8)
resource-agents-aliyun-debuginfo-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-aliyun-debuginfo-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8)
resource-agents-debuginfo-0:4.9.0-40.el8_8.21.ppc64le as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-debuginfo-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-debuginfo-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8)
resource-agents-debugsource-0:4.9.0-40.el8_8.21.ppc64le as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-debugsource-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-debugsource-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8)
resource-agents-gcp-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-gcp-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8)
resource-agents-paf-0:4.9.0-40.el8_8.21.ppc64le as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-paf-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability E4S (v.8.8)
resource-agents-paf-0:4.9.0-40.el8_8.21.x86_64 as a component of Red Hat Enterprise Linux High Availability TUS (v.8.8)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: When processing untrusted ASN.1 data with pyasn1, avoid calling prettyPrint(), str(), float(), int(), or performing comparisons or arithmetic on decoded Real (ASN.1 REAL type) objects. Instead, inspect the raw (mantissa, base, exponent) tuple directly. Where logging decoded ASN.1 structures is necessary, filter out or sanitize Real-typed values before conversion.

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products22

✅ Remediation

🔗 References (4)