CVE-2026-84232 (GCVE-0-2026-84232)

Vulnerability from cvelistv5 – Published: 2026-09-01 15:18 – Updated: 2026-09-17 07:22
VLAI
Title
Pulpcore: python-pulpcore: stored cross-site scripting via inline rendering of uploaded html/svg content
Summary
A flaw was found in pulpcore's content serving application. Files uploaded to Pulp file-type repositories are served with their original content type (e.g., text/html for .html files, image/svg+xml for .svg files) and without a Content-Disposition: attachment header when using local filesystem storage. An authenticated user or attacker with content upload permissions can upload a specially crafted HTML or SVG file containing JavaScript, which executes in the browser of any user who visits the file URL, resulting in stored cross-site scripting (XSS) in the context of the host application.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 17:43 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-84232 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2526807 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-09-01 00:00
Show details on NVD website

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              "packageName": "python-pulpcore",
              "product": "Red Hat Ansible Automation Platform 2",
              "vendor": "Red Hat"
            },
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              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:satellite:6"
              ],
              "defaultStatus": "affected",
              "packageName": "python3.12-pulpcore",
              "product": "Red Hat Satellite 6",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:satellite:6"
              ],
              "defaultStatus": "affected",
              "packageName": "python-pulpcore",
              "product": "Red Hat Satellite 6",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhui:4::el8"
              ],
              "defaultStatus": "unaffected",
              "packageName": "python-pulpcore",
              "product": "Red Hat Update Infrastructure 4 for Cloud Providers",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "unaffected",
              "packageName": "rhui5/rhua-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "unaffected",
              "packageName": "rhui5/rhua-tp-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "Red Hat would like to thank Nathan Hardy for reporting this issue."
            }
          ],
          "datePublic": "2026-09-01T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in pulpcore\u0027s content serving application. Files uploaded to Pulp file-type repositories are served with their original content type (e.g., text/html for .html files, image/svg+xml for .svg files) and without a Content-Disposition: attachment header when using local filesystem storage. An authenticated user or attacker with content upload permissions can upload a specially crafted HTML or SVG file containing JavaScript, which executes in the browser of any user who visits the file URL, resulting in stored cross-site scripting (XSS) in the context of the host application."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Moderate"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.4,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-79",
                  "description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-17T07:22:08.585Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-84232"
            },
            {
              "name": "RHBZ#2526807",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526807"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-09-01T00:00:00.000Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-09-01T00:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Pulpcore: python-pulpcore: stored cross-site scripting via inline rendering of uploaded html/svg content",
          "workarounds": [
            {
              "lang": "en",
              "value": "If immediate update is not possible, administrators can add security headers to the Apache reverse proxy configuration for the /pulp/content/ path. On Satellite, add the following to the Apache configuration (e.g., via a custom .conf file in /etc/httpd/conf.d/ or via a Puppet override):\n\n```\n  \u003cLocation /pulp/content\u003e\n    Header set Content-Disposition \"attachment\"\n    Header set X-Content-Type-Options \"nosniff\"\n    Header set Content-Security-Policy \"default-src \u0027none\u0027; sandbox\"\n  \u003c/Location\u003e\n```\nThis forces all content downloads rather than inline rendering, and blocks script execution even if Content-Disposition is somehow bypassed.\n\nAfter applying, restart Apache: ```systemctl restart httpd```\nAlternatively, restrict file upload permissions in Satellite to only trusted users who require content management capabilities."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-84232",
        "datePublished": "2026-09-01T15:18:59.649Z",
        "dateReserved": "2026-09-01T12:16:44.850Z",
        "dateUpdated": "2026-09-17T07:22:08.585Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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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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