Vulnerability-Lookup

GHSA-7WWH-XCC3-9FCG

Vulnerability from github – Published: 2026-06-22 20:28 – Updated: 2026-06-22 20:28

Summary

Paymenter has Blind Unauthenticated SSRF on the Paypal gateway module

Details

Summary

The PayPal webhook endpoint /extensions/paypal/webhook processes the PAYPAL-CERT-URL HTTP header without validation, allowing attackers to control server-side HTTP request destinations.

Technical details:

The /extensions/paypal/webhook endpoint processes incoming webhook requests and trusts the value of the PAYPAL-CERT-URL HTTP header without validation.

This value is passed directly into a server-side HTTP request via file_get_contents, allowing attackers to control the destination of the request. No allowlist, validation, or signature verification is applied to the header before usage.

As a result, the application can be coerced into performing HTTP requests to attacker-controlled or internal network destinations.

Impact

This vulnerability allows remote unauthenticated attackers to induce server-side HTTP GET requests to arbitrary external or internal endpoints.

Depending on network configuration, this may lead to:

Blind SSRF to external attacker-controlled systems
Potential access to internal network services

No direct response data is returned to the attacker (blind SSRF), but the issue may still enable sensitive network probing or data exfiltration via side channels.

Severity

5.3 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "paymenter/paymenter"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44583"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-22T20:28:29Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\nThe PayPal webhook endpoint `/extensions/paypal/webhook` processes the `PAYPAL-CERT-URL` HTTP header without validation, allowing attackers to control server-side HTTP request destinations.\n\n### Technical details:\n\nThe `/extensions/paypal/webhook` endpoint processes incoming webhook requests and trusts the value of the `PAYPAL-CERT-URL` HTTP header without validation.\n\nThis value is passed directly into a server-side HTTP request via `file_get_contents`, allowing attackers to control the destination of the request. No allowlist, validation, or signature verification is applied to the header before usage.\n\nAs a result, the application can be coerced into performing HTTP requests to attacker-controlled or internal network destinations.\n\n### Impact\nThis vulnerability allows remote unauthenticated attackers to induce server-side HTTP GET requests to arbitrary external or internal endpoints.\n\nDepending on network configuration, this may lead to:\n\n- Blind SSRF to external attacker-controlled systems\n- Potential access to internal network services\n\nNo direct response data is returned to the attacker (blind SSRF), but the issue may still enable sensitive network probing or data exfiltration via side channels.",
  "id": "GHSA-7wwh-xcc3-9fcg",
  "modified": "2026-06-22T20:28:29Z",
  "published": "2026-06-22T20:28:29Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Paymenter/Paymenter/security/advisories/GHSA-7wwh-xcc3-9fcg"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Paymenter/Paymenter"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Paymenter has Blind Unauthenticated SSRF on the Paypal gateway module"
}

CVE-2026-44583 (GCVE-0-2026-44583)

Vulnerability from cvelistv5 – Published: 2026-07-20 20:01 – Updated: 2026-07-21 16:23

Title

Paymenter: Blind Unauthenticated SSRF on the Paypal gateway module

Summary

Paymenter is a free and open-source webshop solution for management of hosting services. In versions prior to 1.5.0, the PayPal webhook endpoint /extensions/paypal/webhook processes the PAYPAL-CERT-URL HTTP header without validation, allowing attackers to control server-side HTTP request destinations. This value is passed directly into a server-side HTTP request via file_get_contents, allowing attackers to control the destination of the request. No allowlist, validation, or signature verification is applied to the header before usage. As a result, the application can be coerced into performing HTTP requests to attacker-controlled or internal network destinations. This vulnerability allows remote unauthenticated attackers to induce server-side HTTP GET requests to arbitrary external or internal endpoints. Depending on network configuration, this may lead to: blind SSRF to external attacker-controlled systems, and potential access to internal network services No direct response data is returned to the attacker (blind SSRF), but the issue may still enable sensitive network probing or data exfiltration via side channels. This issue has been fixed in version 1.5.0.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

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

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/Paymenter/Paymenter/security/a…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Paymenter	Paymenter	Affected: < 1.5.0

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44583",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-21T16:22:22.296211Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-21T16:23:05.330Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Paymenter",
          "vendor": "Paymenter",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.5.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Paymenter is a free and open-source webshop solution for management of hosting services. In versions prior to 1.5.0, the PayPal webhook endpoint /extensions/paypal/webhook processes the PAYPAL-CERT-URL HTTP header without validation, allowing attackers to control server-side HTTP request destinations. This value is passed directly into a server-side HTTP request via file_get_contents, allowing attackers to control the destination of the request. No allowlist, validation, or signature verification is applied to the header before usage. As a result, the application can be coerced into performing HTTP requests to attacker-controlled or internal network destinations. This vulnerability allows remote unauthenticated attackers to induce server-side HTTP GET requests to arbitrary external or internal endpoints. Depending on network configuration, this may lead to: blind SSRF to external attacker-controlled systems, and potential access to internal network services No direct response data is returned to the attacker (blind SSRF), but the issue may still enable sensitive network probing or data exfiltration via side channels. This issue has been fixed in version 1.5.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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": "2026-07-20T20:01:58.914Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Paymenter/Paymenter/security/advisories/GHSA-7wwh-xcc3-9fcg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Paymenter/Paymenter/security/advisories/GHSA-7wwh-xcc3-9fcg"
        }
      ],
      "source": {
        "advisory": "GHSA-7wwh-xcc3-9fcg",
        "discovery": "UNKNOWN"
      },
      "title": "Paymenter: Blind Unauthenticated SSRF on the Paypal gateway module"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44583",
    "datePublished": "2026-07-20T20:01:58.914Z",
    "dateReserved": "2026-05-06T21:49:12.425Z",
    "dateUpdated": "2026-07-21T16:23:05.330Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-7WWH-XCC3-9FCG

Summary

Technical details:

Impact

CVE-2026-44583 (GCVE-0-2026-44583)

Tags

Sightings

Nomenclature