# CVE-2026-4324: katello SQL Injection — Fixed in 4.19.1 💎 💎 RubyGems Not in CISA KEV MEDIUM severity # CVE-2026-4324 — katello MEDIUM [Fix: Katello/katello@a0a793b](https://github.com/Katello/katello/commit/a0a793b08d4f0a897ee985d79a687ad043f99e57) CVE-2026-4324 is a medium-severity (CVSS 5.4) SQL Injection vulnerability in katello. A fix is available for katello — see the affected versions and patch details below. Katello: Denial of Service and potential information disclosure via SQL injection Published Mar 17, 2026 Updated Jun 1, 2026 Affected 1 pkg Patched 1 / 1 Exploits None indexed Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS) ## Exploitation Status ### No confirmed exploitation observed yet - CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment. Exploitation and automatability from CISA’s SSVC triage for CVE-2026-4324. ## EPSS Exploitation Probability [via FIRST.org ↗](https://www.first.org/epss/) 0.3%probability of exploitation in next 30 days Lower Risk\-0.16% Lower risk than most CVEs20th percentile — riskier than 20% of all scored CVEsHighest risk 0.00%0.31%0.62%0.93%0.1%0.3%May 26Aug 26Oct 26 Probability of exploitation in the next 30 days, from [FIRST.org EPSS](https://www.first.org/epss/). ## How urgent is this, really ## Where this sits among everything scored ## Real-World Exposure 1 pkg affected 💎`katello` Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems. ## Description A flaw was found in the Katello plugin for Red Hat Satellite. This vulnerability, caused by improper sanitization of user-provided input, allows a remote attacker to inject arbitrary SQL commands into the sort\_by parameter of the /api/hosts/bootc\_images API endpoint. This can lead to a Denial of Service (DoS) by triggering database errors, and potentially enable Boolean-based Blind SQL injection, which could allow an attacker to extract sensitive information from the database. ## Affected Packages 1 total 1 fixed Ecosystem Package Vulnerable range Fix 💎RubyGems `katello` all versions 4.19.1`bundle update katello --conservative` ## Detection & mitigation playbook Open-source dependency 1. ### Detect Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for katello, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version. 2. ### Fix Update katello to 4.19.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-4324 is resolved across your whole dependency graph. 3. ### Workarounds Until you can upgrade, make sure every query built from user input uses parameterised statements or a prepared-statement API rather than string concatenation, and reduce the database account's privileges so an injected query cannot read or alter data beyond what the feature needs. ## Fixing This On Your OS If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project. Red HatModerate This flaw in the Katello plugin for Red Hat Satellite allows an attacker to inject arbitrary SQL commands into the \`/api/hosts/bootc\_images\` API endpoint. By manipulating the \`sort\_by\` parameter, an attacker could trigger database errors, cause a Denial of Service, or potentially perform Boolean-based Blind SQL… Workaround published by Red Hat > Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Source: [Red Hat security advisory for CVE-2026-4324](https://access.redhat.com/security/cve/cve-2026-4324) (CC BY 4.0) Product Fixed in Advisory Red Hat Satellite 6.17 for RHEL 9 `foreman-0:3.14.0.14-1.el9sat` [RHSA-2026:5970](https://access.redhat.com/errata/RHSA-2026:5970) Red Hat Satellite 6.18 for RHEL 9 `rubygem-katello-0:4.18.0.9-1.el9sat` [RHSA-2026:5968](https://access.redhat.com/errata/RHSA-2026:5968) Red Hat Satellite 6.19 for RHEL 9 `rubygem-katello-0:4.20.0.4-1.el9sat` [RHSA-2026:22326](https://access.redhat.com/errata/RHSA-2026:22326) ## Frequently Asked Questions A flaw was found in the Katello plugin for Red Hat Satellite. This vulnerability, caused by improper sanitization of user-provided input, allows a remote attacker to inject arbitrary SQL commands into the sort\_by parameter of the /api/hosts/bootc\_images API endpoint. This can lead to a Denial of Service (DoS) by triggering database errors, and potentially enable Boolean-based Blind SQL injection, which could allow an attacker to extract sensitive information from the database. O3 Security · Impact-Aware SCA ### Is CVE-2026-4324 in your dependencies? Find it across RubyGems, including transitive dependencies. [Scan my dependencies](/book-demo) [How O3 SCA works](/impact-aware-sca)