Vulnerability-Lookup

GHSA-6P52-PVR6-5X2C

Vulnerability from github – Published: 2026-01-07 18:30 – Updated: 2026-01-07 21:31

Details

Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.

Severity ?

5.3 (Medium)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-0668"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-07T18:15:52Z",
    "severity": "MODERATE"
  },
  "details": "Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.",
  "id": "GHSA-6p52-pvr6-5x2c",
  "modified": "2026-01-07T21:31:55Z",
  "published": "2026-01-07T18:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0668"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba805267d1fc8296e7cff61241ee3"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/I893a9fca694a2613e29e149dea2d76d7f06063e5"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a22a635cfc27964353f14072dbf"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8"
    },
    {
      "type": "WEB",
      "url": "https://phabricator.wikimedia.org/T387008"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-0668 (GCVE-0-2026-0668)

Vulnerability from cvelistv5 – Published: 2026-01-07 17:36 – Updated: 2026-01-07 19:17

Title

VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input

Summary

Severity ?

5.3 (Medium)


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

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

wikimedia-foundation

References

URL

Tags

	https://phabricator.wikimedia.org/T387008
	https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a2…
	https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226…
	https://gerrit.wikimedia.org/r/q/I893a9fca694a261…
	https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba80…

Impacted products

	Vendor	Product	Version
	Wikimedia Foundation	MediaWiki - VisualData Extension	Affected: 1.45

Credits

Radman Siddiki

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-0668",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-07T19:17:04.191560Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-07T19:17:41.764Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "MediaWiki - VisualData Extension",
          "repo": "https://gerrit.wikimedia.org/g/mediawiki/extensions/VisualData",
          "vendor": "Wikimedia Foundation",
          "versions": [
            {
              "status": "affected",
              "version": "1.45"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Radman Siddiki"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.\u003cp\u003eThis issue affects MediaWiki - VisualData Extension: 1.45.\u003c/p\u003e"
            }
          ],
          "value": "Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-492",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-492 Regular Expression Exponential Blowup"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333 Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-07T17:36:19.258Z",
        "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
        "shortName": "wikimedia-foundation"
      },
      "references": [
        {
          "url": "https://phabricator.wikimedia.org/T387008"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a22a635cfc27964353f14072dbf"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/q/I893a9fca694a2613e29e149dea2d76d7f06063e5"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba805267d1fc8296e7cff61241ee3"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
    "assignerShortName": "wikimedia-foundation",
    "cveId": "CVE-2026-0668",
    "datePublished": "2026-01-07T17:36:19.258Z",
    "dateReserved": "2026-01-07T16:34:59.342Z",
    "dateUpdated": "2026-01-07T19:17:41.764Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-6P52-PVR6-5X2C

CVE-2026-0668 (GCVE-0-2026-0668)

Tags

Sightings

Nomenclature