CVE-2026-92704 (GCVE-0-2026-92704)

Vulnerability from cvelistv5 – Published: 2026-11-04 15:24 – Updated: 2026-11-04 15:24
VLAI
Title
SharpEmu: Cross-site request forgery in the debugger frontend leads to arbitrary process execution
Summary
SharpEmu is an experimental PlayStation 5 emulator for Windows and Linux. In version 0.0.3-release.3 and earlier, the repository-provided debugger frontend tooling is vulnerable while running. This tooling is not included in the release archives. The frontend exposes an HTTP API on 127.0.0.1:8765 without authentication or CSRF token. Its  do_POST  handler in  tools/SharpEmu.DebuggerFrontend/debugger_frontend.py  does not validate the Origin, Referer, Sec-Fetch-Site, or Host headers. The  _read_json_body()  function also accepts JSON sent with browser-simple content types instead of requiring  application/json . A malicious page that can reach the loopback listener can send cross-origin requests to  /api/launch ,  /api/command , and  /api/connect . Chromium may require Local Network Access permission for pages served from public origins. Local-origin pages and other delivery paths are not consistently subject to this restriction. The  /api/launch  endpoint accepts an attacker-selected  emulatorPath  if it points to an existing file on the victim’s host. On POSIX systems, that file must also be executable. The endpoint additionally requires an existing  ebootPath . The  /api/command  endpoint exposes debugger operations, including  write-memory ,  set-register , and  continue . The  /api/connect  endpoint can initiate outbound TCP connections. These operations can let an attacker execute an existing binary with the victim’s privileges, control the attached emulated process, or reach network services accessible from the host. DNS rebinding can additionally let the attacker read API responses interactively. This issue is fixed in version 0.0.3-release.3-patch.1
Severity
8.3 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-346 - Origin Validation Error
  • CWE-350 - Reliance on Reverse DNS Resolution for a Security-Critical Action
  • CWE-352 - Cross-Site Request Forgery (CSRF)
  • CWE-749 - Exposed Dangerous Method or Function
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7913 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
sharpemu sharpemu Affected: < 0.0.3-release.3-patch.1
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "sharpemu",
          "vendor": "sharpemu",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.0.3-release.3-patch.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SharpEmu is an experimental PlayStation 5 emulator for Windows and Linux. In version 0.0.3-release.3 and earlier, the repository-provided debugger frontend tooling is vulnerable while running. This tooling is not included in the release archives. The frontend exposes an HTTP API on 127.0.0.1:8765 without authentication or CSRF token. Its \u00a0do_POST\u00a0 handler in \u00a0tools/SharpEmu.DebuggerFrontend/debugger_frontend.py\u00a0 does not validate the Origin, Referer, Sec-Fetch-Site, or Host headers. The \u00a0_read_json_body()\u00a0 function also accepts JSON sent with browser-simple content types instead of requiring \u00a0application/json\u00a0. A malicious page that can reach the loopback listener can send cross-origin requests to \u00a0/api/launch\u00a0, \u00a0/api/command\u00a0, and \u00a0/api/connect\u00a0. Chromium may require Local Network Access permission for pages served from public origins. Local-origin pages and other delivery paths are not consistently subject to this restriction. The \u00a0/api/launch\u00a0 endpoint accepts an attacker-selected \u00a0emulatorPath\u00a0 if it points to an existing file on the victim\u2019s host. On POSIX systems, that file must also be executable. The endpoint additionally requires an existing \u00a0ebootPath\u00a0. The \u00a0/api/command\u00a0 endpoint exposes debugger operations, including \u00a0write-memory\u00a0, \u00a0set-register\u00a0, and \u00a0continue\u00a0. The \u00a0/api/connect\u00a0 endpoint can initiate outbound TCP connections. These operations can let an attacker execute an existing binary with the victim\u2019s privileges, control the attached emulated process, or reach network services accessible from the host. DNS rebinding can additionally let the attacker read API responses interactively. This issue is fixed in version 0.0.3-release.3-patch.1"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306: Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "CWE-346: Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-350",
              "description": "CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-352",
              "description": "CWE-352: Cross-Site Request Forgery (CSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-749",
              "description": "CWE-749: Exposed Dangerous Method or Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-04T15:24:16.625Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/sharpemu/sharpemu/security/advisories/GHSA-fr3v-rvqp-8fx3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sharpemu/sharpemu/security/advisories/GHSA-fr3v-rvqp-8fx3"
        },
        {
          "name": "https://github.com/sharpemu/sharpemu/pull/858",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sharpemu/sharpemu/pull/858"
        },
        {
          "name": "https://github.com/sharpemu/sharpemu/commit/3831f3c407c547a5e58f353649b2c556d785c463",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sharpemu/sharpemu/commit/3831f3c407c547a5e58f353649b2c556d785c463"
        },
        {
          "name": "https://github.com/sharpemu/sharpemu/releases/tag/v0.0.3-release.3-patch.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sharpemu/sharpemu/releases/tag/v0.0.3-release.3-patch.1"
        }
      ],
      "source": {
        "advisory": "GHSA-fr3v-rvqp-8fx3",
        "discovery": "UNKNOWN"
      },
      "title": "SharpEmu: Cross-site request forgery in the debugger frontend leads to arbitrary process execution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-92704",
    "datePublished": "2026-11-04T15:24:16.625Z",
    "dateReserved": "2026-09-16T16:22:31.542Z",
    "dateUpdated": "2026-11-04T15:24:16.625Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "sharpemu",
                "vendor": "sharpemu",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 0.0.3-release.3-patch.1"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "SharpEmu is an experimental PlayStation 5 emulator for Windows and Linux. In version 0.0.3-release.3 and earlier, the repository-provided debugger frontend tooling is vulnerable while running. This tooling is not included in the release archives. The frontend exposes an HTTP API on 127.0.0.1:8765 without authentication or CSRF token. Its \u00a0do_POST\u00a0 handler in \u00a0tools/SharpEmu.DebuggerFrontend/debugger_frontend.py\u00a0 does not validate the Origin, Referer, Sec-Fetch-Site, or Host headers. The \u00a0_read_json_body()\u00a0 function also accepts JSON sent with browser-simple content types instead of requiring \u00a0application/json\u00a0. A malicious page that can reach the loopback listener can send cross-origin requests to \u00a0/api/launch\u00a0, \u00a0/api/command\u00a0, and \u00a0/api/connect\u00a0. Chromium may require Local Network Access permission for pages served from public origins. Local-origin pages and other delivery paths are not consistently subject to this restriction. The \u00a0/api/launch\u00a0 endpoint accepts an attacker-selected \u00a0emulatorPath\u00a0 if it points to an existing file on the victim\u2019s host. On POSIX systems, that file must also be executable. The endpoint additionally requires an existing \u00a0ebootPath\u00a0. The \u00a0/api/command\u00a0 endpoint exposes debugger operations, including \u00a0write-memory\u00a0, \u00a0set-register\u00a0, and \u00a0continue\u00a0. The \u00a0/api/connect\u00a0 endpoint can initiate outbound TCP connections. These operations can let an attacker execute an existing binary with the victim\u2019s privileges, control the attached emulated process, or reach network services accessible from the host. DNS rebinding can additionally let the attacker read API responses interactively. This issue is fixed in version 0.0.3-release.3-patch.1"
          }
        ],
        "id": "CVE-2026-92704",
        "lastModified": "2026-11-04T16:17:55.097",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.3,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.6,
              "impactScore": 6.0,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-11-04T16:17:55.097",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/sharpemu/sharpemu/commit/3831f3c407c547a5e58f353649b2c556d785c463"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/sharpemu/sharpemu/pull/858"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/sharpemu/sharpemu/releases/tag/v0.0.3-release.3-patch.1"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/sharpemu/sharpemu/security/advisories/GHSA-fr3v-rvqp-8fx3"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-306"
              },
              {
                "lang": "en",
                "value": "CWE-346"
              },
              {
                "lang": "en",
                "value": "CWE-350"
              },
              {
                "lang": "en",
                "value": "CWE-352"
              },
              {
                "lang": "en",
                "value": "CWE-749"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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