RHSA-2026:71906

Vulnerability from csaf_redhat - Published: 2026-09-25 15:11 - Updated: 2026-09-25 22:28
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: grafana13.2: * grafana13.2-13.2.1-0.7.hum1 (aarch64, x86_64) * grafana13.2-13.2.1-0.7.hum1.src (src) Security Fix(es): grafana13.2: * CVE-2026-93450 * CVE-2026-86472 * CVE-2026-93981 * CVE-2026-75838
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 DOMPurify. This cross-site scripting vulnerability occurs during IN_PLACE sanitization, where element-removal hooks fail to neutralize detached subtrees. A remote attacker can exploit this by supplying specially crafted HTML with event handlers. This allows the execution of malicious scripts even after the HTML appears to be sanitized, leading to potential information disclosure or unauthorized actions.

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate

A flaw was found in fast-uri, a dependency-free URI parser. This vulnerability occurs because the software folds the host to lowercase before percent-decoding it, allowing percent-encoded uppercase characters to bypass this normalization. A remote attacker could exploit this by crafting a malicious URI with a percent-encoded uppercase octet, potentially bypassing host allowlists or denylists in applications that rely on fast-uri's output for case-sensitive host decisions. This could lead to a security bypass, allowing access to restricted resources or services.

CWE-178 - Improper Handling of Case Sensitivity
Affected products
Fixed 3 products, the same list as for CVE-2026-75838
Threats
Impact Moderate

A flaw was found in hono/jsx. This vulnerability occurs because the software fails to properly escape plain strings when they are rendered in certain contexts during server-side rendering. A remote attacker can exploit this by providing specially crafted input, leading to Cross-Site Scripting (XSS). This allows the attacker to inject malicious code into web pages viewed by other users, potentially compromising user sessions or defacing the website.

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected products
Fixed 3 products, the same list as for CVE-2026-75838
Threats
Impact Moderate
References
URL Category
https://access.redhat.com/errata/RHSA-2026:71906 self
https://access.redhat.com/security/cve/CVE-2026-75838 external
https://access.redhat.com/security/cve/CVE-2026-86472 external
https://access.redhat.com/security/cve/CVE-2026-93450 external
https://access.redhat.com/security/cve/CVE-2026-93981 external
https://access.redhat.com/security/updates/classi… external
https://images.redhat.com/ external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-75838 self
https://bugzilla.redhat.com/show_bug.cgi?id=2517772 external
https://www.cve.org/CVERecord?id=CVE-2026-75838 external
https://nvd.nist.gov/vuln/detail/CVE-2026-75838 external
https://github.com/cure53/DOMPurify/security/advi… external
https://www.vulncheck.com/advisories/dompurify-be… external
https://access.redhat.com/security/cve/CVE-2026-86472 self
https://bugzilla.redhat.com/show_bug.cgi?id=2533679 external
https://www.cve.org/CVERecord?id=CVE-2026-86472 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86472 external
https://cna.openjsf.org/security-advisories.html external
https://github.com/fastify/fast-uri/security/advi… external
https://access.redhat.com/security/cve/CVE-2026-93981 self
https://bugzilla.redhat.com/show_bug.cgi?id=2538284 external
https://www.cve.org/CVERecord?id=CVE-2026-93981 external
https://nvd.nist.gov/vuln/detail/CVE-2026-93981 external
https://github.com/honojs/hono/security/advisorie… external
https://www.vulncheck.com/advisories/hono-jsx-bef… external

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        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
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          "title": "Vulnerability description"
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          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
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            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@src",
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          "url": "https://access.redhat.com/errata/RHSA-2026:71906"
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
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            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@x86_64"
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      ],
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          "category": "impact",
          "details": "Moderate"
        }
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      "title": "dompurify: DOMPurify: Cross-Site Scripting via IN_PLACE sanitization"
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          "title": "Vulnerability description"
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          "text": "fast-uri: fast-uri: Security bypass due to inconsistent host case normalization",
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          "text": "Moderate: A security bypass flaw was found in fast-uri due to inconsistent host case normalization. This issue allows an attacker to bypass host allowlist or denylist security checks in applications that perform case-sensitive host comparisons on fast-uri output, potentially leading to unauthorized access or actions.",
          "title": "Statement"
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          "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.",
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          "product_ids": [
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@aarch64",
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@src",
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@aarch64",
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@src",
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "fast-uri: fast-uri: Security bypass due to inconsistent host case normalization"
    },
    {
      "cve": "CVE-2026-93981",
      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
      },
      "discovery_date": "2026-09-22T17:34:17.989244+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2538284"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in hono/jsx. This vulnerability occurs because the software fails to properly escape plain strings when they are rendered in certain contexts during server-side rendering. A remote attacker can exploit this by providing specially crafted input, leading to Cross-Site Scripting (XSS). This allows the attacker to inject malicious code into web pages viewed by other users, potentially compromising user sessions or defacing the website.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "hono: hono/jsx: Cross-Site Scripting via Unescaped Strings",
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@aarch64",
          "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@src",
          "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-93981"
        },
        {
          "category": "external",
          "summary": "RHBZ#2538284",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2538284"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-93981",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-93981"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-93981",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93981"
        },
        {
          "category": "external",
          "summary": "https://github.com/honojs/hono/security/advisories/GHSA-hxh3-vqpv-xpqv",
          "url": "https://github.com/honojs/hono/security/advisories/GHSA-hxh3-vqpv-xpqv"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/hono-jsx-before-4.13.7-cross-site-scripting-via-unescaped-strings",
          "url": "https://www.vulncheck.com/advisories/hono-jsx-before-4.13.7-cross-site-scripting-via-unescaped-strings"
        }
      ],
      "release_date": "2026-09-19T11:53:34.294000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-25T15:11:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@aarch64",
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@src",
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:71906"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@aarch64",
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@src",
            "Red Hat Hardened Images:grafana13.2-0:13.2.1-0.7.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "hono: hono/jsx: Cross-Site Scripting via Unescaped Strings"
    }
  ]
}



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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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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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