RHSA-2026:20606
Vulnerability from csaf_redhat - Published: 2026-05-26 05:33 - Updated: 2026-05-26 08:55Summary
Red Hat Security Advisory: ruby4.0 security update
Severity
Important
Notes
Topic: An update for ruby4.0 is now available for Red Hat Enterprise Linux 10.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Ruby is the interpreted scripting language for quick and easy object-oriented programming. It has many features to process text files and to do system management tasks (as in Perl). It is simple, straight-forward, and extensible.
Security Fix(es):
* ruby/json: Ruby JSON: Denial of Service or Information Disclosure via format string injection (CVE-2026-33210)
* erb: ERB: Arbitrary code execution via deserialization bypass (CVE-2026-41316)
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.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Ruby JSON. This vulnerability, a format string injection, allows a remote attacker to cause a denial of service (DoS) or disclose sensitive information. The flaw occurs when processing specially crafted user-supplied documents with the allow_duplicate_key: false parsing option enabled.
9.1 (Critical)
Affected products
Fixed
68 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.src | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-doc-0:4.0.3-34.el10_2.noarch | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.x86_64 | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.src | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-doc-0:4.0.3-34.el10_2.noarch | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.ppc64le | — |
Vendor Fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.x86_64 | — |
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Threats
Impact
Important
A flaw was found in ERB, a templating system for Ruby. An attacker who can trigger deserialization of untrusted data in a Ruby application can bypass existing protections. This vulnerability allows for arbitrary code execution by exploiting specific public methods that evaluate template source code, which were not properly guarded against deserialization attacks.
8.1 (High)
Affected products
Fixed
68 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.s390x | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.src | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.x86_64 | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.aarch64 | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.ppc64le | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.aarch64 | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.x86_64 | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.aarch64 | — |
Vendor Fix
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-doc-0:4.0.3-34.el10_2.noarch | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.x86_64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.aarch64 | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.ppc64le | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.s390x | — |
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| Unresolved product id: AppStream-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.src | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debuginfo-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-debugsource-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.s390x | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-devel-0:4.0.3-34.el10_2.x86_64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-doc-0:4.0.3-34.el10_2.noarch | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.aarch64 | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.ppc64le | — |
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.s390x | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-0:0.5.7-34.el10_2.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.ppc64le | — |
Vendor Fix
fix
|
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.s390x | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.s390x | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.s390x | — |
Vendor Fix
fix
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| Unresolved product id: CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.x86_64 | — |
Vendor Fix
fix
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Threats
Impact
Important
References
15 references
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"text": "A flaw was found in Ruby JSON. This vulnerability, a format string injection, allows a remote attacker to cause a denial of service (DoS) or disclose sensitive information. The flaw occurs when processing specially crafted user-supplied documents with the allow_duplicate_key: false parsing option enabled.",
"title": "Vulnerability description"
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"text": "ruby/json: Ruby JSON: Denial of Service or Information Disclosure via format string injection",
"title": "Vulnerability summary"
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{
"category": "other",
"text": "A format string injection flaw was identified in Ruby JSON. This vulnerability allows a remote attacker to cause a denial of service or disclose sensitive information when processing specially crafted user-supplied documents with the `allow_duplicate_key: false` parsing option enabled. Red Hat Enterprise Linux 9.9 (ruby:4.0/ruby), Red Hat Enterprise Linux 10.3 (ruby4.0), and Insights (cloudservices/compliance-backend) are affected.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-33210"
},
{
"category": "external",
"summary": "RHBZ#2449871",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449871"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-33210",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33210"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33210",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33210"
},
{
"category": "external",
"summary": "https://github.com/ruby/json/security/advisories/GHSA-3m6g-2423-7cp3",
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"release_date": "2026-03-20T22:57:08.758000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-05-26T05:33:25+00:00",
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"title": "ruby/json: Ruby JSON: Denial of Service or Information Disclosure via format string injection"
},
{
"cve": "CVE-2026-41316",
"cwe": {
"id": "CWE-502",
"name": "Deserialization of Untrusted Data"
},
"discovery_date": "2026-04-24T03:01:16.620515+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2461369"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in ERB, a templating system for Ruby. An attacker who can trigger deserialization of untrusted data in a Ruby application can bypass existing protections. This vulnerability allows for arbitrary code execution by exploiting specific public methods that evaluate template source code, which were not properly guarded against deserialization attacks.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "erb: ERB: Arbitrary code execution via deserialization bypass",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-41316"
},
{
"category": "external",
"summary": "RHBZ#2461369",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461369"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-41316",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-41316"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-41316",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41316"
},
{
"category": "external",
"summary": "https://github.com/ruby/erb/security/advisories/GHSA-q339-8rmv-2mhv",
"url": "https://github.com/ruby/erb/security/advisories/GHSA-q339-8rmv-2mhv"
}
],
"release_date": "2026-04-24T02:35:41.160000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-05-26T05:33:25+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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{
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.ppc64le",
"CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.s390x",
"CRB-10.2.Z:ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-34.el10_2.x86_64",
"CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.aarch64",
"CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.ppc64le",
"CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.s390x",
"CRB-10.2.Z:ruby4.0-rubygem-pg-0:1.6.3-34.el10_2.x86_64",
"CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.aarch64",
"CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.ppc64le",
"CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.s390x",
"CRB-10.2.Z:ruby4.0-rubygem-pg-debuginfo-0:1.6.3-34.el10_2.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "erb: ERB: Arbitrary code execution via deserialization bypass"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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