Vulnerability-Lookup

CVE-2026-30247 (GCVE-0-2026-30247)

Vulnerability from cvelistv5 – Published: 2026-03-07 03:33 – Updated: 2026-03-09 20:54

Title

WeKnora: SSRF via Redirection

Summary

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application's "Import document via URL" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12.

Severity ?

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

GitHub_M

References

URL

Tags

https://github.com/Tencent/WeKnora/security/advis…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	Tencent	WeKnora	Affected: < 0.2.12

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-30247",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-09T20:43:21.952235Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-09T20:54:27.857Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "WeKnora",
          "vendor": "Tencent",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.2.12"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application\u0027s \"Import document via URL\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-07T03:33:27.140Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc"
        }
      ],
      "source": {
        "advisory": "GHSA-595m-wc8g-6qgc",
        "discovery": "UNKNOWN"
      },
      "title": "WeKnora: SSRF via Redirection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-30247",
    "datePublished": "2026-03-07T03:33:27.140Z",
    "dateReserved": "2026-03-04T17:23:59.799Z",
    "dateUpdated": "2026-03-09T20:54:27.857Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-30247\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-03-07T04:15:54.560\",\"lastModified\":\"2026-03-11T19:22:24.300\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application\u0027s \\\"Import document via URL\\\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12.\"},{\"lang\":\"es\",\"value\":\"WeKnora es un framework impulsado por LLM dise\u00f1ado para la comprensi\u00f3n profunda de documentos y la recuperaci\u00f3n sem\u00e1ntica. Antes de la versi\u00f3n 0.2.12, la caracter\u00edstica \u0027Importar documento v\u00eda URL\u0027 de la aplicaci\u00f3n es vulnerable a la falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF) a trav\u00e9s de redirecciones HTTP. Aunque el backend implementa una validaci\u00f3n exhaustiva de URL (bloqueando IPs privadas, direcciones de bucle invertido, nombres de host reservados y puntos finales de metadatos en la nube), no logra validar los objetivos de redirecci\u00f3n. Un atacante puede eludir todas las protecciones mediante el uso de una cadena de redirecci\u00f3n, forzando al servidor a acceder a servicios internos. Adem\u00e1s, las direcciones internas espec\u00edficas de Docker como host.docker.internal no est\u00e1n bloqueadas. Este problema ha sido parcheado en la versi\u00f3n 0.2.12.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-918\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:tencent:weknora:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"0.2.12\",\"matchCriteriaId\":\"7B86D061-D1A8-438E-802E-D5408C339349\"}]}]}],\"references\":[{\"url\":\"https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-30247\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-09T20:43:21.952235Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-09T20:47:20.162Z\"}}], \"cna\": {\"title\": \"WeKnora: SSRF via Redirection\", \"source\": {\"advisory\": \"GHSA-595m-wc8g-6qgc\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.9, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"Tencent\", \"product\": \"WeKnora\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 0.2.12\"}]}], \"references\": [{\"url\": \"https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc\", \"name\": \"https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc\", \"tags\": [\"x_refsource_CONFIRM\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application\u0027s \\\"Import document via URL\\\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-918\", \"description\": \"CWE-918: Server-Side Request Forgery (SSRF)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-03-07T03:33:27.140Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-30247\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-09T20:54:27.857Z\", \"dateReserved\": \"2026-03-04T17:23:59.799Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-03-07T03:33:27.140Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-30247

Vulnerability from fkie_nvd - Published: 2026-03-07 04:15 - Updated: 2026-03-11 19:22

Severity ?

5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	tencent	weknora	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tencent:weknora:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7B86D061-D1A8-438E-802E-D5408C339349",
              "versionEndExcluding": "0.2.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application\u0027s \"Import document via URL\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12."
    },
    {
      "lang": "es",
      "value": "WeKnora es un framework impulsado por LLM dise\u00f1ado para la comprensi\u00f3n profunda de documentos y la recuperaci\u00f3n sem\u00e1ntica. Antes de la versi\u00f3n 0.2.12, la caracter\u00edstica \u0027Importar documento v\u00eda URL\u0027 de la aplicaci\u00f3n es vulnerable a la falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF) a trav\u00e9s de redirecciones HTTP. Aunque el backend implementa una validaci\u00f3n exhaustiva de URL (bloqueando IPs privadas, direcciones de bucle invertido, nombres de host reservados y puntos finales de metadatos en la nube), no logra validar los objetivos de redirecci\u00f3n. Un atacante puede eludir todas las protecciones mediante el uso de una cadena de redirecci\u00f3n, forzando al servidor a acceder a servicios internos. Adem\u00e1s, las direcciones internas espec\u00edficas de Docker como host.docker.internal no est\u00e1n bloqueadas. Este problema ha sido parcheado en la versi\u00f3n 0.2.12."
    }
  ],
  "id": "CVE-2026-30247",
  "lastModified": "2026-03-11T19:22:24.300",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-03-07T04:15:54.560",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

GHSA-595M-WC8G-6QGC

Vulnerability from github – Published: 2026-03-05 21:49 – Updated: 2026-03-09 13:13

Summary

WeKnora is Vulnerable to SSRF via Redirection

Details

Summary

The application's "Import document via URL" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked.

Details

The /api/v1/knowledge-bases/{id}/knowledge/url endpoint validates the initial URL but follows HTTP redirects without re-validating the destination. This allows attackers to: 1. Submit a URL to an attacker-controlled domain (passes validation) 2. Have that domain respond with a 307 redirect to an internal service 3. The backend automatically follows the redirect without checking if the destination is restricted 4. The internal service response is exposed to the attacker

Validation Gaps

The IsSSRFSafeURL() function (in internal/utils/security.go) validates the initial URL thoroughly, but there's no validation of HTTP redirect targets
host.docker.internal is not in the restrictedHostnames list
Docker-specific IP ranges (172.17.0.0/16 for bridge networks) are not explicitly blocked
The code validates parsed.Hostname() from the initial URL, but redirect Location headers bypass this check

Root Cause Analysis

The backend makes the security mistake of trusting the server's HTTP client library to be secure. In Go, when using http.Get() or similar functions, the standard library will automatically follow redirects up to 10 times by default. The SSRF validation only checks the URL passed to the endpoint, not intermediate redirects.

PoC

Step 1: Set up an attacker-controlled server that responds with a redirect:

HTTP/1.1 307 Temporary Redirect
Location: http://host.docker.internal:7777
Content-Type: text/html
Access-Control-Allow-Origin: *

Step 2: Send the request with a clean URL:

POST /api/v1/knowledge-bases/dbadd153-9e60-4213-9553-9f78dbcba0dc/knowledge/url HTTP/1.1
Host: localhost
Content-Type: application/json
Authorization: Bearer <valid_token>

{"url":"https://attacker-domain.com","tag_id":""}

The URL https://attacker-domain.com passes all validation checks because: ✓ Valid https:// scheme ✓ Not an IP address (it's a domain) ✓ Not in restricted hostnames ✓ Doesn't resolve to a private IP (assuming attacker controls a public domain)

Step 3: The backend's HTTP client follows the redirect to http://host.docker.internal:7777, which: ✗ Is not validated ✗ host.docker.internal is not in the blocklist ✗ Successfully accesses the internal service

Impact

Vulnerability Type: Server-Side Request Forgery (SSRF) via HTTP Redirect

Who is Impacted: - The organization running the application - Internal services and databases accessible from the application container - Services in the Docker network (other containers, internal infrastructure) - Sensitive data stored in internal services

Potential Consequences: - Access to internal databases (PostgreSQL, MongoDB, MySQL) running in Docker - Information disclosure from internal services (Redis cache, configuration servers) - Access to Docker container metadata and environment variables - Lateral movement to other containers in the same Docker network - Exfiltration of sensitive configuration, API keys, or database credentials - Potential RCE if internal services have exploitable vulnerabilities

Severity ?

5.9 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.2.11"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/Tencent/WeKnora"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-30247"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-05T21:49:03Z",
    "nvd_published_at": "2026-03-07T04:15:54Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nThe application\u0027s \"Import document via URL\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it **fails to validate redirect targets**. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like `host.docker.internal` are not blocked.\n\n### Details\n\nThe `/api/v1/knowledge-bases/{id}/knowledge/url` endpoint validates the initial URL but follows HTTP redirects without re-validating the destination. This allows attackers to:\n1. Submit a URL to an attacker-controlled domain (passes validation)\n2. Have that domain respond with a 307 redirect to an internal service\n3. The backend automatically follows the redirect without checking if the destination is restricted\n4. The internal service response is exposed to the attacker\n\n### Validation Gaps\n- The `IsSSRFSafeURL()` function (in `internal/utils/security.go`) validates the initial URL thoroughly, but there\u0027s no validation of HTTP redirect targets\n- `host.docker.internal` is not in the `restrictedHostnames` list\n- Docker-specific IP ranges (172.17.0.0/16 for bridge networks) are not explicitly blocked\n- The code validates `parsed.Hostname()` from the initial URL, but redirect Location headers bypass this check\n\n### Root Cause Analysis\nThe backend makes the security mistake of trusting the server\u0027s HTTP client library to be secure. In Go, when using http.Get() or similar functions, the standard library will automatically follow redirects up to 10 times by default. The SSRF validation only checks the URL passed to the endpoint, not intermediate redirects.\n\n### PoC\n\n**Step 1**: Set up an attacker-controlled server that responds with a redirect:\n\n```http\nHTTP/1.1 307 Temporary Redirect\nLocation: http://host.docker.internal:7777\nContent-Type: text/html\nAccess-Control-Allow-Origin: *\n```\n**Step 2**: Send the request with a clean URL:\n\n```http\nPOST /api/v1/knowledge-bases/dbadd153-9e60-4213-9553-9f78dbcba0dc/knowledge/url HTTP/1.1\nHost: localhost\nContent-Type: application/json\nAuthorization: Bearer \u003cvalid_token\u003e\n\n{\"url\":\"https://attacker-domain.com\",\"tag_id\":\"\"}\n```\n\nThe URL `https://attacker-domain.com` passes all validation checks because:\n\u2713 Valid `https://` scheme\n\u2713 Not an IP address (it\u0027s a domain)\n\u2713 Not in restricted hostnames\n\u2713 Doesn\u0027t resolve to a private IP (assuming attacker controls a public domain)\n\n**Step 3**: The backend\u0027s HTTP client follows the redirect to `http://host.docker.internal:7777`, which:\n\u2717 Is not validated\n\u2717 `host.docker.internal` is not in the blocklist\n\u2717 Successfully accesses the internal service\n\n### Impact\n\nVulnerability Type: Server-Side Request Forgery (SSRF) via HTTP Redirect\n\n**Who is Impacted**:\n- The organization running the application\n- Internal services and databases accessible from the application container\n- Services in the Docker network (other containers, internal infrastructure)\n- Sensitive data stored in internal services\n\n**Potential Consequences**:\n- Access to internal databases (PostgreSQL, MongoDB, MySQL) running in Docker\n- Information disclosure from internal services (Redis cache, configuration servers)\n- Access to Docker container metadata and environment variables\n- Lateral movement to other containers in the same Docker network\n- Exfiltration of sensitive configuration, API keys, or database credentials\n- Potential RCE if internal services have exploitable vulnerabilities",
  "id": "GHSA-595m-wc8g-6qgc",
  "modified": "2026-03-09T13:13:28Z",
  "published": "2026-03-05T21:49:03Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30247"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Tencent/WeKnora"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "WeKnora is Vulnerable to SSRF via Redirection"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-30247 (GCVE-0-2026-30247)

FKIE_CVE-2026-30247

GHSA-595M-WC8G-6QGC

Summary

Details

Validation Gaps

Root Cause Analysis

PoC

Impact

Tags

Sightings

Nomenclature