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    4 vulnerabilities by QWED-AI

    CVE-2026-55585 (GCVE-0-2026-55585)

    Vulnerability from nvd – Published: 2026-08-25 16:23 – Updated: 2026-08-25 16:23
    VLAI
    Title
    QWED: Authenticated Remote Code Execution via Unsafe SymPy `parse_expr()`
    Summary
    QWED is open-source AI verification infrastructure for deterministic verification of LLM outputs, tool calls, code, schemas, and agent state before production execution. Prior to 5.1.2, the qwed package passes caller-controlled math expressions directly to SymPy parse_expr() without restricted global_dict and local_dict namespaces, allowing Python eval() to resolve builtins and execute arbitrary Python code in the API server process. In src/qwed_new/api/main.py, POST /verify/math is protected by get_current_tenant but accepts any valid tenant API key, reads the expression field, applies only a cosmetic re.sub(r'(\d)(()', r'\1*\2', expression) normalization, and passes the result to parse_expr(). In src/qwed_new/core/batch.py, POST /verify/batch sends math items through batch_service.create_job(), stores item.query verbatim, and _verify_item() passes VerificationType.MATH input to parse_expr() without sanitization. The default-enabled POST /auth/signup endpoint allows anyone to create a standard tenant account, POST /auth/api-keys issues an x-api-key, and either vulnerable path can then be used to read or write files, modify data, execute operating system commands, terminate the service, and compromise other tenants in a shared deployment. This issue is fixed in version 5.1.2.
    Severity
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    CWE
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "qwed-verification",
          "vendor": "QWED-AI",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.1.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "QWED is open-source AI verification infrastructure for deterministic verification of LLM outputs, tool calls, code, schemas, and agent state before production execution. Prior to 5.1.2, the qwed package passes caller-controlled math expressions directly to SymPy parse_expr() without restricted global_dict and local_dict namespaces, allowing Python eval() to resolve builtins and execute arbitrary Python code in the API server process. In src/qwed_new/api/main.py, POST /verify/math is protected by get_current_tenant but accepts any valid tenant API key, reads the expression field, applies only a cosmetic re.sub(r\u0027(\\d)(()\u0027, r\u0027\\1*\\2\u0027, expression) normalization, and passes the result to parse_expr(). In src/qwed_new/core/batch.py, POST /verify/batch sends math items through batch_service.create_job(), stores item.query verbatim, and _verify_item() passes VerificationType.MATH input to parse_expr() without sanitization. The default-enabled POST /auth/signup endpoint allows anyone to create a standard tenant account, POST /auth/api-keys issues an x-api-key, and either vulnerable path can then be used to read or write files, modify data, execute operating system commands, terminate the service, and compromise other tenants in a shared deployment. This issue is fixed in version 5.1.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
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              "type": "CWE"
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          ]
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      ],
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          "url": "https://github.com/QWED-AI/qwed-verification/security/advisories/GHSA-q27q-98j4-9pfv"
        },
        {
          "name": "https://github.com/QWED-AI/qwed-verification/pull/200",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/QWED-AI/qwed-verification/pull/200"
        },
        {
          "name": "https://github.com/QWED-AI/qwed-verification/commit/6066b68c0c4f4cc2c3771824822aaa864d082ef8",
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      },
      "title": "QWED: Authenticated Remote Code Execution via Unsafe SymPy `parse_expr()`"
    }
  },
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    "datePublished": "2026-08-25T16:23:39.334Z",
    "dateReserved": "2026-06-16T23:18:03.169Z",
    "dateUpdated": "2026-08-25T16:23:39.334Z",
    "state": "PUBLISHED"
  },
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}

    CVE-2026-55546 (GCVE-0-2026-55546)

    Vulnerability from nvd – Published: 2026-08-25 15:25 – Updated: 2026-08-25 18:26
    VLAI
    Title
    QWED-MCP: Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input
    Summary
    QWED-MCP is a deterministic verification gateway for MCP. Prior to 0.2.1, verify_math_expression() in src/qwed_mcp/engines/math_engine.py passes attacker-controlled expression and claimed_result strings directly to SymPy's parse_expr() after only normalizing caret syntax to Python exponent syntax, without restricting global_dict, removing Python built-ins, or validating the expression AST. Because parse_expr() calls Python's eval() with built-ins available, an attacker who can cause a downstream caller to pass untrusted input to this public library function can use Python import functionality to execute arbitrary operating-system commands as the qwed-mcp process user, read or modify accessible data, exfiltrate process secrets, or reach internal services. The default MCP tool registry does not expose verify_math_expression(), so exploitation requires a downstream integration that invokes the library API with attacker-controlled input. This issue is fixed in version 0.2.1.
    Severity
    9.8 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-25 18:26 UTC
    CWE
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    QWED-AI qwed-mcp Affected: < 0.2.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
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        "metrics": [
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        "title": "CISA ADP Vulnrichment"
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      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "x_refsource_MISC"
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          "url": "https://github.com/QWED-AI/qwed-mcp/releases/tag/v0.2.1"
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      "source": {
        "advisory": "GHSA-mw6r-2hvm-4rp2",
        "discovery": "UNKNOWN"
      },
      "title": "QWED-MCP: Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input"
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}

    CVE-2026-55585 (GCVE-0-2026-55585)

    Vulnerability from cvelistv5 – Published: 2026-08-25 16:23 – Updated: 2026-08-25 16:23
    VLAI
    Title
    QWED: Authenticated Remote Code Execution via Unsafe SymPy `parse_expr()`
    Summary
    QWED is open-source AI verification infrastructure for deterministic verification of LLM outputs, tool calls, code, schemas, and agent state before production execution. Prior to 5.1.2, the qwed package passes caller-controlled math expressions directly to SymPy parse_expr() without restricted global_dict and local_dict namespaces, allowing Python eval() to resolve builtins and execute arbitrary Python code in the API server process. In src/qwed_new/api/main.py, POST /verify/math is protected by get_current_tenant but accepts any valid tenant API key, reads the expression field, applies only a cosmetic re.sub(r'(\d)(()', r'\1*\2', expression) normalization, and passes the result to parse_expr(). In src/qwed_new/core/batch.py, POST /verify/batch sends math items through batch_service.create_job(), stores item.query verbatim, and _verify_item() passes VerificationType.MATH input to parse_expr() without sanitization. The default-enabled POST /auth/signup endpoint allows anyone to create a standard tenant account, POST /auth/api-keys issues an x-api-key, and either vulnerable path can then be used to read or write files, modify data, execute operating system commands, terminate the service, and compromise other tenants in a shared deployment. This issue is fixed in version 5.1.2.
    Severity
    8.8 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    CWE
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "qwed-verification",
          "vendor": "QWED-AI",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.1.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "QWED is open-source AI verification infrastructure for deterministic verification of LLM outputs, tool calls, code, schemas, and agent state before production execution. Prior to 5.1.2, the qwed package passes caller-controlled math expressions directly to SymPy parse_expr() without restricted global_dict and local_dict namespaces, allowing Python eval() to resolve builtins and execute arbitrary Python code in the API server process. In src/qwed_new/api/main.py, POST /verify/math is protected by get_current_tenant but accepts any valid tenant API key, reads the expression field, applies only a cosmetic re.sub(r\u0027(\\d)(()\u0027, r\u0027\\1*\\2\u0027, expression) normalization, and passes the result to parse_expr(). In src/qwed_new/core/batch.py, POST /verify/batch sends math items through batch_service.create_job(), stores item.query verbatim, and _verify_item() passes VerificationType.MATH input to parse_expr() without sanitization. The default-enabled POST /auth/signup endpoint allows anyone to create a standard tenant account, POST /auth/api-keys issues an x-api-key, and either vulnerable path can then be used to read or write files, modify data, execute operating system commands, terminate the service, and compromise other tenants in a shared deployment. This issue is fixed in version 5.1.2."
        }
      ],
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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      "title": "QWED: Authenticated Remote Code Execution via Unsafe SymPy `parse_expr()`"
    }
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    CVE-2026-55546 (GCVE-0-2026-55546)

    Vulnerability from cvelistv5 – Published: 2026-08-25 15:25 – Updated: 2026-08-25 18:26
    VLAI
    Title
    QWED-MCP: Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input
    Summary
    QWED-MCP is a deterministic verification gateway for MCP. Prior to 0.2.1, verify_math_expression() in src/qwed_mcp/engines/math_engine.py passes attacker-controlled expression and claimed_result strings directly to SymPy's parse_expr() after only normalizing caret syntax to Python exponent syntax, without restricting global_dict, removing Python built-ins, or validating the expression AST. Because parse_expr() calls Python's eval() with built-ins available, an attacker who can cause a downstream caller to pass untrusted input to this public library function can use Python import functionality to execute arbitrary operating-system commands as the qwed-mcp process user, read or modify accessible data, exfiltrate process secrets, or reach internal services. The default MCP tool registry does not expose verify_math_expression(), so exploitation requires a downstream integration that invokes the library API with attacker-controlled input. This issue is fixed in version 0.2.1.
    Severity
    9.8 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-25 18:26 UTC
    CWE
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    QWED-AI qwed-mcp Affected: < 0.2.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
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            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-25T15:25:34.759Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/QWED-AI/qwed-mcp/security/advisories/GHSA-mw6r-2hvm-4rp2",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/QWED-AI/qwed-mcp/security/advisories/GHSA-mw6r-2hvm-4rp2"
        },
        {
          "name": "https://github.com/QWED-AI/qwed-mcp/pull/22",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/QWED-AI/qwed-mcp/pull/22"
        },
        {
          "name": "https://github.com/QWED-AI/qwed-mcp/commit/362e61892052e250c56cb1ee852024d6f98c467b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/QWED-AI/qwed-mcp/commit/362e61892052e250c56cb1ee852024d6f98c467b"
        },
        {
          "name": "https://github.com/QWED-AI/qwed-mcp/releases/tag/v0.2.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/QWED-AI/qwed-mcp/releases/tag/v0.2.1"
        }
      ],
      "source": {
        "advisory": "GHSA-mw6r-2hvm-4rp2",
        "discovery": "UNKNOWN"
      },
      "title": "QWED-MCP: Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55546",
    "datePublished": "2026-08-25T15:25:34.759Z",
    "dateReserved": "2026-06-16T23:01:04.075Z",
    "dateUpdated": "2026-08-25T18:26:44.049Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}