Vulnerability-Lookup

CVE-2026-73364 (GCVE-0-2026-73364)

Vulnerability from cvelistv5 – Published: 2026-08-19 12:38 – Updated: 2026-08-19 19:29

Title

WordPress Flexible Subscriptions plugin <= 1.8.1 - PHP Object Injection vulnerability

Summary

Customer PHP Object Injection in Flexible Subscriptions <= 1.8.1 versions.

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-19 19:29 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

Patchstack mitre root

References

1 reference

URL	Tags
https://patchstack.com/database/wordpress/plugin/…	vdb-entry

Impacted products

1 product

Vendor	Product	Version	CPE status
wpdesk	Flexible Subscriptions	Affected: n/a , ≤ 1.8.1 (custom)	guessed

Credits

Van Phuc | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-73364

Vulnerability from fkie_nvd - Published: 2026-08-19 13:18 - Updated: 2026-08-20 12:48

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

Customer PHP Object Injection in Flexible Subscriptions <= 1.8.1 versions.

References

	URL	Tags
	audit@patchstack.com	https://patchstack.com/database/wordpress/plugin/flexible-subscriptions/vulnerability/wordpress-flexible-subscriptions-plugin-1-8-1-php-object-injection-vulnerability?_s_id=cve

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://wordpress.org/plugins",
          "defaultStatus": "unaffected",
          "packageName": "flexible-subscriptions",
          "product": "Flexible Subscriptions",
          "vendor": "wpdesk",
          "versions": [
            {
              "changes": [
                {
                  "at": "1.8.2",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "1.8.1",
              "status": "affected",
              "version": "n/a",
              "versionType": "custom"
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GHSA-R5MM-45XF-59FX

Vulnerability from github – Published: 2026-08-19 15:32 – Updated: 2026-08-19 15:32

Details

Customer PHP Object Injection in Flexible Subscriptions <= 1.8.1 versions.

Severity

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-73364"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-19T13:18:07Z",
    "severity": "CRITICAL"
  },
  "details": "Customer PHP Object Injection in Flexible Subscriptions \u003c= 1.8.1 versions.",
  "id": "GHSA-r5mm-45xf-59fx",
  "modified": "2026-08-19T15:32:25Z",
  "published": "2026-08-19T15:32:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73364"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/wordpress/plugin/flexible-subscriptions/vulnerability/wordpress-flexible-subscriptions-plugin-1-8-1-php-object-injection-vulnerability?_s_id=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2026-73364 (GCVE-0-2026-73364)

FKIE_CVE-2026-73364

GHSA-R5MM-45XF-59FX

Tags

Sightings

Nomenclature

Related by attack behaviour