Vulnerability-Lookup

GHSA-R9Q4-XCM5-G5WW

Vulnerability from github – Published: 2026-08-08 09:30 – Updated: 2026-08-08 09:30

Details

The Appointment Hour Booking WordPress plugin before 1.5.88 does not validate a client-supplied booking price against the server-side configured service price, allowing unauthenticated users to submit an arbitrary final price (including zero or negative) that is stored as the authoritative booking price, corrupting booking and payment records.

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-16282"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-08T07:17:09Z",
    "severity": null
  },
  "details": "The Appointment Hour Booking  WordPress plugin before 1.5.88 does not validate a client-supplied booking price against the server-side configured service price, allowing unauthenticated users to submit an arbitrary final price (including zero or negative) that is stored as the authoritative booking price, corrupting booking and payment records.",
  "id": "GHSA-r9q4-xcm5-g5ww",
  "modified": "2026-08-08T09:30:20Z",
  "published": "2026-08-08T09:30:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16282"
    },
    {
      "type": "WEB",
      "url": "https://wpscan.com/vulnerability/e87116af-d202-434b-9f47-e61e9c886240"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-16282 (GCVE-0-2026-16282)

Vulnerability from cvelistv5 – Published: 2026-08-08 06:00 – Updated: 2026-08-08 06:00

Title

Appointment Hour Booking < 1.5.88 - Unauthenticated Booking Price Manipulation via tcost Parameter

Summary

Severity

No CVSS data available.

CWE

CWE-287 Improper Authentication

Assigner

WPScan

References

1 reference

URL	Tags
https://wpscan.com/vulnerability/e87116af-d202-43…	exploitvdb-entrytechnical-description

Impacted products

1 product

Vendor	Product	Version
Unknown	Appointment Hour Booking	Affected: 0 , < 1.5.88 (semver)

Credits

Researcher1: Alessandro Greco aka Aleff; Researcher2: Giovambattista Ianni; Company/Organization: University of Calabria (UNICAL) WPScan

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Appointment Hour Booking",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "1.5.88",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Researcher1: Alessandro Greco aka Aleff; Researcher2: Giovambattista Ianni; Company/Organization: University of Calabria (UNICAL)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Appointment Hour Booking  WordPress plugin before 1.5.88 does not validate a client-supplied booking price against the server-side configured service price, allowing unauthenticated users to submit an arbitrary final price (including zero or negative) that is stored as the authoritative booking price, corrupting booking and payment records."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-287 Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-08T06:00:10.896Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/e87116af-d202-434b-9f47-e61e9c886240/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Appointment Hour Booking \u003c 1.5.88 - Unauthenticated Booking Price Manipulation via tcost Parameter",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-16282",
    "datePublished": "2026-08-08T06:00:10.896Z",
    "dateReserved": "2026-07-20T10:58:19.374Z",
    "dateUpdated": "2026-08-08T06:00:10.896Z",
    "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

GHSA-R9Q4-XCM5-G5WW

CVE-2026-16282 (GCVE-0-2026-16282)

Tags

Sightings

Nomenclature