Vulnerability-Lookup

CVE-2026-100506 (GCVE-0-2026-100506)

Vulnerability from cvelistv5 – Published: 2026-10-05 19:00 – Updated: 2026-10-06 10:41 X_Open Source

Title

WordPress WP Spell Check plugin <= 12.1 - PHP Object Injection vulnerability

Summary

Deserialization of Untrusted Data vulnerability in WP Spell Check WP Spell Check wp-spell-check allows Object Injection.This issue affects WP Spell Check: from n/a through 12.1.

Severity

7.2 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-06 10:22 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

Patchstack CNA under the mitre root

CNA scorecard C 75/100 over 2956 records in the last 180 days details

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version	CPE status
WP Spell Check	WP Spell Check	Affected: 0 , ≤ 12.1 (custom)	guessed

Date Public

2026-10-03 18:40

Credits

Ananda Dhakal (Patchstack)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-100506

Vulnerability from fkie_nvd - Published: 2026-10-05 20:17 - Updated: 2026-10-06 15:04

Severity

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

Summary

Deserialization of Untrusted Data vulnerability in WP Spell Check WP Spell Check wp-spell-check allows Object Injection.This issue affects WP Spell Check: from n/a through 12.1.

References

	URL	Tags
	audit@patchstack.com	https://patchstack.com/database/wordpress/plugin/wp-spell-check/vulnerability/wordpress-wp-spell-check-plugin-12-1-php-object-injection-vulnerability?_s_id=cve

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
      "affectedData": [
        {
          "collectionURL": "https://wordpress.org/plugins",
          "defaultStatus": "unaffected",
          "packageName": "wp-spell-check",
          "product": "WP Spell Check",
          "vendor": "WP Spell Check",
          "versions": [
            {
              "changes": [
                {
                  "at": "12.2",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "12.1",
              "status": "affected",
              "version": "0",
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GHSA-29VV-GX7G-VM7G

Vulnerability from github – Published: 2026-10-05 21:31 – Updated: 2026-10-05 21:31

Details

Deserialization of Untrusted Data vulnerability in WP Spell Check WP Spell Check wp-spell-check allows Object Injection.This issue affects WP Spell Check: from n/a through 12.1.

Severity

7.2 (High)


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

Show details on source website

JSON

To clipboard

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  },
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  "id": "GHSA-29vv-gx7g-vm7g",
  "modified": "2026-10-05T21:31:36Z",
  "published": "2026-10-05T21:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100506"
    },
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      "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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-2026-100506 (GCVE-0-2026-100506)

FKIE_CVE-2026-100506

GHSA-29VV-GX7G-VM7G

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour