CVE-2026-90987 (GCVE-0-2026-90987)

Vulnerability from cvelistv5 – Published: 2026-10-02 06:56 – Updated: 2026-10-02 10:54
VLAI
Title
Easy PayPal & Stripe Buy Now Button 1.8 - 2.0.5 - Unauthenticated Payment Amount Manipulation via Client-Supplied Price
Summary
The Easy PayPal & Stripe Buy Now Button WordPress plugin before 2.0.6 does not derive the payment amount on the server, taking it from a client-supplied field, so an unauthenticated attacker sets an arbitrary lower price for a purchase.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 10:48 UTC
CWE
Assigner
References
URL Tags
https://wpscan.com/vulnerability/7c1faee8-628a-41… exploitvdb-entrytechnical-description
Impacted products
Vendor Product Version
Unknown Easy PayPal & Stripe Buy Now Button Affected: 1.8 , < 2.0.6 (semver)
Create a notification for this product.
Credits
JunHee CHO WPScan
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-90987",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-02T10:48:18.811017Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-472",
                "description": "CWE-472 External Control of Assumed-Immutable Web Parameter",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-02T10:54:10.258Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://wordpress.org/plugins",
          "defaultStatus": "unaffected",
          "product": "Easy PayPal \u0026 Stripe Buy Now Button",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "2.0.6",
              "status": "affected",
              "version": "1.8",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "JunHee CHO"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Easy PayPal \u0026 Stripe Buy Now Button WordPress plugin before 2.0.6 does not derive the payment amount on the server, taking it from a client-supplied field, so an unauthenticated attacker sets an arbitrary lower price for a purchase."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-472 External Control of Assumed-Immutable Web Parameter",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-02T06:56:52.240Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/7c1faee8-628a-41dc-a5f0-afbc56480a18/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Easy PayPal \u0026 Stripe Buy Now Button 1.8 - 2.0.5 - Unauthenticated Payment Amount Manipulation via Client-Supplied Price",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-90987",
    "datePublished": "2026-10-02T06:56:52.240Z",
    "dateReserved": "2026-09-14T13:55:59.930Z",
    "dateUpdated": "2026-10-02T10:54:10.258Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://wordpress.org/plugins",
                "defaultStatus": "unaffected",
                "product": "Easy PayPal \u0026 Stripe Buy Now Button",
                "vendor": "Unknown",
                "versions": [
                  {
                    "lessThan": "2.0.6",
                    "status": "affected",
                    "version": "1.8",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "contact@wpscan.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The Easy PayPal \u0026 Stripe Buy Now Button WordPress plugin before 2.0.6 does not derive the payment amount on the server, taking it from a client-supplied field, so an unauthenticated attacker sets an arbitrary lower price for a purchase."
          }
        ],
        "id": "CVE-2026-90987",
        "lastModified": "2026-10-02T07:16:38.370",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 1.4,
              "source": "contact@wpscan.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-02T07:16:38.370",
        "references": [
          {
            "source": "contact@wpscan.com",
            "url": "https://wpscan.com/vulnerability/7c1faee8-628a-41dc-a5f0-afbc56480a18/"
          }
        ],
        "sourceIdentifier": "contact@wpscan.com",
        "vulnStatus": "Received"
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.