Vulnerability-Lookup

CVE-2026-82884 (GCVE-0-2026-82884)

Vulnerability from cvelistv5 – Published: 2026-09-02 14:16 – Updated: 2026-09-02 14:57

Title

All in One SEO < 5.0.0.1 - Contributor+ Stored XSS via ai-assistant Block

Summary

The All in One SEO WordPress plugin before 5.0.0.1 does not sanitise and escape some content stored in posts before rendering it back in the post editor, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks that trigger when a higher privileged user edits the post.

Severity

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:R/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 2026-09-02 14:46 UTC

CWE

CWE-79 Cross-Site Scripting (XSS)
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

WPScan mitre root

References

1 reference

URL	Tags
https://wpscan.com/vulnerability/9d4e5075-062a-42…	exploitvdb-entrytechnical-description

Impacted products

1 product

Vendor	Product	Version	CPE status
Unknown	All in One SEO	Affected: 0 , < 5.0.0.1 (semver)	guessed

Credits

Asaf Mozes WPScan

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-82884",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-02T14:46:30.091406Z",
                "version": "2.0.3"
              },
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        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "collectionURL": "https://wordpress.org/plugins",
          "defaultStatus": "unaffected",
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          "vendor": "Unknown",
          "versions": [
            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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          "lang": "en",
          "type": "finder",
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          "lang": "en",
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        }
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          "lang": "en",
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
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          "url": "https://wpscan.com/vulnerability/9d4e5075-062a-42d7-beba-9f96f9ce76da/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "All in One SEO \u003c 5.0.0.1 - Contributor+ Stored XSS via ai-assistant Block",
      "x_generator": {
        "engine": "WPScan CVE Generator"
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    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-82884",
    "datePublished": "2026-09-02T14:16:53.430Z",
    "dateReserved": "2026-08-31T08:49:38.647Z",
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
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    "vulnrichment": {
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}

FKIE_CVE-2026-82884

Vulnerability from fkie_nvd - Published: 2026-09-02 15:17 - Updated: 2026-09-02 15:17

Severity

6.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	contact@wpscan.com	https://wpscan.com/vulnerability/9d4e5075-062a-42d7-beba-9f96f9ce76da/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://wordpress.org/plugins",
          "defaultStatus": "unaffected",
          "product": "All in One SEO",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "5.0.0.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "contact@wpscan.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The All in One SEO WordPress plugin before 5.0.0.1 does not sanitise and escape some content stored in posts before rendering it back in the post editor, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks that trigger when a higher privileged user edits the post."
    }
  ],
  "id": "CVE-2026-82884",
  "lastModified": "2026-09-02T15:17:44.553",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 5.9,
        "source": "contact@wpscan.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-82884",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-02T14:46:30.091406Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-02T15:17:44.553",
  "references": [
    {
      "source": "contact@wpscan.com",
      "url": "https://wpscan.com/vulnerability/9d4e5075-062a-42d7-beba-9f96f9ce76da/"
    }
  ],
  "sourceIdentifier": "contact@wpscan.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

GHSA-46W6-GF75-JC42

Vulnerability from github – Published: 2026-09-02 15:34 – Updated: 2026-09-02 15:34

Details

Severity

6.8 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-82884"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-02T15:17:44Z",
    "severity": "MODERATE"
  },
  "details": "The All in One SEO WordPress plugin before 5.0.0.1 does not sanitise and escape some content stored in posts before rendering it back in the post editor, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks that trigger when a higher privileged user edits the post.",
  "id": "GHSA-46w6-gf75-jc42",
  "modified": "2026-09-02T15:34:51Z",
  "published": "2026-09-02T15:34:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82884"
    },
    {
      "type": "WEB",
      "url": "https://wpscan.com/vulnerability/9d4e5075-062a-42d7-beba-9f96f9ce76da"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/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.

Action not permitted

CVE-2026-82884 (GCVE-0-2026-82884)

FKIE_CVE-2026-82884

GHSA-46W6-GF75-JC42

Tags

Sightings

Nomenclature