Vulnerability-Lookup

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

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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-07 19:17 UTC

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

wikimedia-foundation CNA under the mitre root

CNA scorecard C 69/100 over 81 records in the last 180 days details

References

5 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

1 product

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

Credits

Radman Siddiki

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-0668

Vulnerability from fkie_nvd - Published: 2026-01-07 18:15 - Updated: 2026-10-26 21:10

Severity

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

Summary

References

URL	Tags
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc	https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba805267d1fc8296e7cff61241ee3	Patch
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc	https://gerrit.wikimedia.org/r/q/I893a9fca694a2613e29e149dea2d76d7f06063e5	Patch
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc	https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a22a635cfc27964353f14072dbf	Patch
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc	https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8	Patch
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc	https://phabricator.wikimedia.org/T387008	Exploit, Issue Tracking

Impacted products

	Vendor	Product	Version
	wikisphere	visualdata	-
	mediawiki	mediawiki	1.45.0

JSON

To clipboard

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      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
      "tags": [
        "Patch"
      ],
      "url": "https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8"
    },
    {
      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
      "tags": [
        "Exploit",
        "Issue Tracking"
      ],
      "url": "https://phabricator.wikimedia.org/T387008"
    }
  ],
  "sourceIdentifier": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
      "type": "Secondary"
    }
  ]
}

GHSA-6P52-PVR6-5X2C

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

Details

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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{
  "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"
    }
  ]
}

WID-SEC-W-2026-0035

Vulnerability from csaf_certbund - Published: 2026-01-07 23:00 - Updated: 2026-01-07 23:00

Summary

MediaWiki Erweiterungen: Mehrere Schwachstellen

Severity

Mittel

Scope

3 vulnerabilities in this advisory, including CVE-2026-0668.

CVE-2026-0668

Known affected: 2 products

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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.

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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.

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

FKIE_CVE-2026-0668

GHSA-6P52-PVR6-5X2C

WID-SEC-W-2026-0035

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