CVE-2026-107360 (GCVE-0-2026-107360)

Vulnerability from cvelistv5 – Published: 2026-11-12 20:04 – Updated: 2026-11-12 23:56
VLAI
Title
Rubygem-safemode: safemode: jail allow-list bypass via op-assign expressions
Summary
A flaw was found in rubygem-safemode. Compound assignment expressions in sandboxed code are evaluated without mediating method calls through the Jail allow-list. An authenticated attacker who can supply template content can invoke arbitrary no-argument methods on objects exposed to the template renderer without Jail mediation, including destructive operations such as host deletion and disclosure of non-allow-listed object state.
Severity
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CWE
  • CWE-183 - Permissive List of Allowed Inputs
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1205 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:99949 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:99950 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:99952 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-107360 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2547645 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Satellite 6.16 for RHEL 8 Unaffected: 0:1.5.0-3.el8sat , < * (rpm)
    cpe:/a:redhat:satellite:6.16::el8
    cpe:/a:redhat:satellite:6.16::el9
    cpe:/a:redhat:satellite_capsule:6.16::el8
    cpe:/a:redhat:satellite_capsule:6.16::el9
    cpe:/a:redhat:satellite_utils:6.16::el8
    cpe:/a:redhat:satellite_utils:6.16::el9
Create a notification for this product.
Red Hat Red Hat Satellite 6.16 for RHEL 9 Unaffected: 0:1.5.0-3.el9sat , < * (rpm)
    cpe:/a:redhat:satellite:6.16::el8
    cpe:/a:redhat:satellite:6.16::el9
    cpe:/a:redhat:satellite_capsule:6.16::el8
    cpe:/a:redhat:satellite_capsule:6.16::el9
    cpe:/a:redhat:satellite_utils:6.16::el8
    cpe:/a:redhat:satellite_utils:6.16::el9
Create a notification for this product.
Red Hat Red Hat Satellite 6.17 for RHEL 9 Unaffected: 0:1.5.0-3.el9sat , < * (rpm)
    cpe:/a:redhat:satellite:6.17::el9
    cpe:/a:redhat:satellite_capsule:6.17::el9
    cpe:/a:redhat:satellite_maintenance:6.17::el9
    cpe:/a:redhat:satellite_utils:6.17::el9
Create a notification for this product.
Red Hat Red Hat Satellite 6.18 for RHEL 9 Unaffected: 0:1.5.0-3.el9sat , < * (rpm)
    cpe:/a:redhat:satellite:6.18::el9
    cpe:/a:redhat:satellite_capsule:6.18::el9
    cpe:/a:redhat:satellite_maintenance:6.18::el9
    cpe:/a:redhat:satellite_utils:6.18::el9
Create a notification for this product.
Date Public
2026-11-12 18:46
Credits
Red Hat would like to thank Kaya Emre Arikan for reporting this issue.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:satellite:6.16::el8",
            "cpe:/a:redhat:satellite:6.16::el9",
            "cpe:/a:redhat:satellite_capsule:6.16::el8",
            "cpe:/a:redhat:satellite_capsule:6.16::el9",
            "cpe:/a:redhat:satellite_utils:6.16::el8",
            "cpe:/a:redhat:satellite_utils:6.16::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "rubygem-safemode",
          "product": "Red Hat Satellite 6.16 for RHEL 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.5.0-3.el8sat",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:satellite:6.16::el8",
            "cpe:/a:redhat:satellite:6.16::el9",
            "cpe:/a:redhat:satellite_capsule:6.16::el8",
            "cpe:/a:redhat:satellite_capsule:6.16::el9",
            "cpe:/a:redhat:satellite_utils:6.16::el8",
            "cpe:/a:redhat:satellite_utils:6.16::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "rubygem-safemode",
          "product": "Red Hat Satellite 6.16 for RHEL 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.5.0-3.el9sat",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:satellite:6.17::el9",
            "cpe:/a:redhat:satellite_capsule:6.17::el9",
            "cpe:/a:redhat:satellite_maintenance:6.17::el9",
            "cpe:/a:redhat:satellite_utils:6.17::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "rubygem-safemode",
          "product": "Red Hat Satellite 6.17 for RHEL 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.5.0-3.el9sat",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:satellite:6.18::el9",
            "cpe:/a:redhat:satellite_capsule:6.18::el9",
            "cpe:/a:redhat:satellite_maintenance:6.18::el9",
            "cpe:/a:redhat:satellite_utils:6.18::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "rubygem-safemode",
          "product": "Red Hat Satellite 6.18 for RHEL 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.5.0-3.el9sat",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Red Hat would like to thank Kaya Emre Arikan for reporting this issue."
        }
      ],
      "datePublic": "2026-11-12T18:46:45.782Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in rubygem-safemode. Compound assignment expressions in sandboxed code are evaluated without mediating method calls through the Jail allow-list. An authenticated attacker who can supply template content can invoke arbitrary no-argument methods on objects exposed to the template renderer without Jail mediation, including destructive operations such as host deletion and disclosure of non-allow-listed object state."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Critical"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-183",
              "description": "Permissive List of Allowed Inputs",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-12T23:56:20.667Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "RHSA-2026:99949",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:99949"
        },
        {
          "name": "RHSA-2026:99950",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:99950"
        },
        {
          "name": "RHSA-2026:99952",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:99952"
        },
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-107360"
        },
        {
          "name": "RHBZ#2547645",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547645"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-10-02T00:00:00.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-11-12T18:46:45.782Z",
          "value": "Made public."
        }
      ],
      "title": "Rubygem-safemode: safemode: jail allow-list bypass via op-assign expressions",
      "workarounds": [
        {
          "lang": "en",
          "value": "Restrict template edit privileges to trusted administrators until a fixed safemode release is deployed. Where feasible, avoid exposing highly privileged ActiveRecord objects to untrusted template authors."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-183: Permissive List of Allowed Inputs"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-107360",
    "datePublished": "2026-11-12T20:04:13.447Z",
    "dateReserved": "2026-10-07T20:07:22.060Z",
    "dateUpdated": "2026-11-12T23:56:20.667Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:satellite:6.16::el8",
                  "cpe:/a:redhat:satellite:6.16::el9",
                  "cpe:/a:redhat:satellite_capsule:6.16::el8",
                  "cpe:/a:redhat:satellite_capsule:6.16::el9",
                  "cpe:/a:redhat:satellite_utils:6.16::el8",
                  "cpe:/a:redhat:satellite_utils:6.16::el9"
                ],
                "defaultStatus": "affected",
                "packageName": "rubygem-safemode",
                "product": "Red Hat Satellite 6.16 for RHEL 8",
                "vendor": "Red Hat",
                "versions": [
                  {
                    "lessThan": "*",
                    "status": "unaffected",
                    "version": "0:1.5.0-3.el8sat",
                    "versionType": "rpm"
                  }
                ]
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:satellite:6.16::el8",
                  "cpe:/a:redhat:satellite:6.16::el9",
                  "cpe:/a:redhat:satellite_capsule:6.16::el8",
                  "cpe:/a:redhat:satellite_capsule:6.16::el9",
                  "cpe:/a:redhat:satellite_utils:6.16::el8",
                  "cpe:/a:redhat:satellite_utils:6.16::el9"
                ],
                "defaultStatus": "affected",
                "packageName": "rubygem-safemode",
                "product": "Red Hat Satellite 6.16 for RHEL 9",
                "vendor": "Red Hat",
                "versions": [
                  {
                    "lessThan": "*",
                    "status": "unaffected",
                    "version": "0:1.5.0-3.el9sat",
                    "versionType": "rpm"
                  }
                ]
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:satellite:6.17::el9",
                  "cpe:/a:redhat:satellite_capsule:6.17::el9",
                  "cpe:/a:redhat:satellite_maintenance:6.17::el9",
                  "cpe:/a:redhat:satellite_utils:6.17::el9"
                ],
                "defaultStatus": "affected",
                "packageName": "rubygem-safemode",
                "product": "Red Hat Satellite 6.17 for RHEL 9",
                "vendor": "Red Hat",
                "versions": [
                  {
                    "lessThan": "*",
                    "status": "unaffected",
                    "version": "0:1.5.0-3.el9sat",
                    "versionType": "rpm"
                  }
                ]
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:satellite:6.18::el9",
                  "cpe:/a:redhat:satellite_capsule:6.18::el9",
                  "cpe:/a:redhat:satellite_maintenance:6.18::el9",
                  "cpe:/a:redhat:satellite_utils:6.18::el9"
                ],
                "defaultStatus": "affected",
                "packageName": "rubygem-safemode",
                "product": "Red Hat Satellite 6.18 for RHEL 9",
                "vendor": "Red Hat",
                "versions": [
                  {
                    "lessThan": "*",
                    "status": "unaffected",
                    "version": "0:1.5.0-3.el9sat",
                    "versionType": "rpm"
                  }
                ]
              }
            ],
            "source": "secalert@redhat.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in rubygem-safemode. Compound assignment expressions in sandboxed code are evaluated without mediating method calls through the Jail allow-list. An authenticated attacker who can supply template content can invoke arbitrary no-argument methods on objects exposed to the template renderer without Jail mediation, including destructive operations such as host deletion and disclosure of non-allow-listed object state."
          }
        ],
        "id": "CVE-2026-107360",
        "lastModified": "2026-11-13T00:20:06.967",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 9.6,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.1,
              "impactScore": 5.8,
              "source": "secalert@redhat.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-11-12T20:18:14.907",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "https://access.redhat.com/errata/RHSA-2026:99949"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://access.redhat.com/errata/RHSA-2026:99950"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://access.redhat.com/errata/RHSA-2026:99952"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://access.redhat.com/security/cve/CVE-2026-107360"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547645"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-183"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Critical",
      "current_release_date": "2026-11-12T23:56:16+00:00",
      "cve": "CVE-2026-107360",
      "id": "CVE-2026-107360",
      "initial_release_date": "2026-11-12T18:46:45.782000+00:00",
      "product_status:fixed": "8",
      "product_status:known_not_affected": "307",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "rubygem-safemode: safemode: Jail allow-list bypass via op-assign expressions",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107360.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    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.