Vulnerability-Lookup

CVE-2026-77608 (GCVE-0-2026-77608)

Vulnerability from cvelistv5 – Published: 2026-09-18 16:43 – Updated: 2026-09-18 16:50

Title

Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value` parameters)

Summary

Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, when the `value` parameter was reflected back into rendered output and error messaging paths without enough output-context encoding. Version 7.2.0 fixes the issue.

Severity

6.1 (Medium)


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

CWE

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

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/SemanticMediaWiki/SemanticMedi…	x_refsource_CONFIRM
https://github.com/SemanticMediaWiki/SemanticMedi…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
SemanticMediaWiki	SemanticMediaWiki	Affected: < 7.2.0	guessed

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "SemanticMediaWiki",
          "vendor": "SemanticMediaWiki",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.2.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki\u0027s pages. Prior to version 7.2.0, when the `value` parameter was reflected back into rendered output and error messaging paths without enough output-context encoding. Version 7.2.0 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-18T16:50:57.471Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-59xw-qv23-j3rc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-59xw-qv23-j3rc"
        },
        {
          "name": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0"
        }
      ],
      "source": {
        "advisory": "GHSA-59xw-qv23-j3rc",
        "discovery": "UNKNOWN"
      },
      "title": "Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value` parameters)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-77608",
    "datePublished": "2026-09-18T16:43:43.868Z",
    "dateReserved": "2026-08-20T20:48:20.508Z",
    "dateUpdated": "2026-09-18T16:50:57.471Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-77608",
      "date": "2026-09-19",
      "epss": "0.00155",
      "percentile": "0.05011"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "SemanticMediaWiki",
                "vendor": "SemanticMediaWiki",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 7.2.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki\u0027s pages. Prior to version 7.2.0, when the `value` parameter was reflected back into rendered output and error messaging paths without enough output-context encoding. Version 7.2.0 fixes the issue."
          }
        ],
        "id": "CVE-2026-77608",
        "lastModified": "2026-09-18T17:17:01.127",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 2.7,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-18T17:17:01.127",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-59xw-qv23-j3rc"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}

GHSA-59XW-QV23-J3RC

Vulnerability from github – Published: 2026-09-18 16:42 – Updated: 2026-09-18 16:42

Summary

Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value` parameters)

Details

Failure mode

The value parameter was reflected back into rendered output and error messaging paths without enough output-context encoding.

Remediation

The form value is escaped before it is placed back into the input field.
Derived error messages are also escaped before being rendered into HTML.

Maintenance note

Do not treat error text as trusted just because it originated from validation. Validation output can still be attacker-influenced.

Severity

6.1 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 7.1.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "mediawiki/semantic-media-wiki"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-77608"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-18T16:42:50Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "#### Failure mode\n\nThe `value` parameter was reflected back into rendered output and error messaging paths without enough output-context encoding.\n\n#### Remediation\n\n- The form value is escaped before it is placed back into the input field.\n- Derived error messages are also escaped before being rendered into HTML.\n\n#### Maintenance note\n\nDo not treat error text as trusted just because it originated from validation. Validation output can still be attacker-influenced.",
  "id": "GHSA-59xw-qv23-j3rc",
  "modified": "2026-09-18T16:42:50Z",
  "published": "2026-09-18T16:42:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-59xw-qv23-j3rc"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki"
    },
    {
      "type": "WEB",
      "url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value` parameters)"
}

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.