FKIE_CVE-2026-2712

Vulnerability from fkie_nvd - Published: 2026-04-10 02:16 - Updated: 2026-04-24 18:01
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Summary
The WP-Optimize plugin for WordPress is vulnerable to unauthorized access of functionality due to missing capability checks in the `receive_heartbeat()` function in `includes/class-wp-optimize-heartbeat.php` in all versions up to, and including, 4.5.0. This is due to the Heartbeat handler directly invoking `Updraft_Smush_Manager_Commands` methods without verifying user capabilities, nonce tokens, or the allowed commands whitelist that the normal AJAX handler (`updraft_smush_ajax`) enforces. This makes it possible for authenticated attackers, with Subscriber-level access and above, to invoke admin-only Smush operations including reading log files (`get_smush_logs`), deleting all backup images (`clean_all_backup_images`), triggering bulk image processing (`process_bulk_smush`), and modifying Smush options (`update_smush_options`).
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/wp-optimize/tags/4.4.1/includes/class-wp-optimize-heartbeat.php#L65
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/wp-optimize/tags/4.4.1/includes/class-wp-optimize-heartbeat.php#L82
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/wp-optimize/trunk/includes/class-wp-optimize-heartbeat.php#L65
security@wordfence.comhttps://research.cleantalk.org/cve-2026-2712/
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/6a0a376e-ea3a-40ca-9341-f28f92e15e02?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The WP-Optimize plugin for WordPress is vulnerable to unauthorized access of functionality due to missing capability checks in the `receive_heartbeat()` function in `includes/class-wp-optimize-heartbeat.php` in all versions up to, and including, 4.5.0. This is due to the Heartbeat handler directly invoking `Updraft_Smush_Manager_Commands` methods without verifying user capabilities, nonce tokens, or the allowed commands whitelist that the normal AJAX handler (`updraft_smush_ajax`) enforces. This makes it possible for authenticated attackers, with Subscriber-level access and above, to invoke admin-only Smush operations including reading log files (`get_smush_logs`), deleting all backup images (`clean_all_backup_images`), triggering bulk image processing (`process_bulk_smush`), and modifying Smush options (`update_smush_options`)."
    }
  ],
  "id": "CVE-2026-2712",
  "lastModified": "2026-04-24T18:01:58.517",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5,
        "source": "security@wordfence.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-04-10T02:16:02.913",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/wp-optimize/tags/4.4.1/includes/class-wp-optimize-heartbeat.php#L65"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/wp-optimize/tags/4.4.1/includes/class-wp-optimize-heartbeat.php#L82"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/wp-optimize/trunk/includes/class-wp-optimize-heartbeat.php#L65"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://research.cleantalk.org/cve-2026-2712/"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/6a0a376e-ea3a-40ca-9341-f28f92e15e02?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Primary"
    }
  ]
}


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