Vulnerability-Lookup

GHSA-CP48-9XX4-PMJ6

Vulnerability from github – Published: 2026-04-07 21:32 – Updated: 2026-04-07 21:32

Details

Improper neutralization of alternate XSS syntax vulnerability in The Wikimedia Foundation Mediawiki - Wikilove Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Wikilove Extension: 1.43.7, 1.44.4, 1.45.2.

Severity ?

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-22711"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-87"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-07T19:16:43Z",
    "severity": "MODERATE"
  },
  "details": "Improper neutralization of alternate XSS syntax vulnerability in The Wikimedia Foundation Mediawiki - Wikilove Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Wikilove Extension: 1.43.7, 1.44.4, 1.45.2.",
  "id": "GHSA-cp48-9xx4-pmj6",
  "modified": "2026-04-07T21:32:39Z",
  "published": "2026-04-07T21:32:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22711"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/Iab86209478a044504f5a6aea0d8c3d14f21c48b3"
    },
    {
      "type": "WEB",
      "url": "https://phabricator.wikimedia.org/T416502"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-22711 (GCVE-0-2026-22711)

Vulnerability from cvelistv5 – Published: 2026-04-07 18:39 – Updated: 2026-04-08 22:02

Title

Stored XSS through system messages in WikiLove

Summary

Improper neutralization of alternate XSS syntax vulnerability in The Wikimedia Foundation Mediawiki - Wikilove Extension allows Cross-Site Scripting (XSS).The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

Severity ?

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

CWE

CWE-87 - Improper neutralization of alternate XSS syntax

Assigner

wikimedia-foundation

References

URL

Tags

	https://phabricator.wikimedia.org/T416502
	https://gerrit.wikimedia.org/r/q/Iab86209478a0445…

Impacted products

	Vendor	Product	Version
	The Wikimedia Foundation	Mediawiki - Wikilove Extension	Unaffected: 1.43 Unaffected: 1.44 Unaffected: 1.45 Affected: 0 , < 1.43 (custom)

Credits

SomeRandomDeveloper

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-22711",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-07T20:34:51.173753Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-07T20:42:44.089Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Mediawiki - Wikilove Extension",
          "vendor": "The Wikimedia Foundation",
          "versions": [
            {
              "status": "unaffected",
              "version": "1.43"
            },
            {
              "status": "unaffected",
              "version": "1.44"
            },
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              "status": "unaffected",
              "version": "1.45"
            },
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              "lessThan": "1.43",
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              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
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          "value": "SomeRandomDeveloper"
        }
      ],
      "descriptions": [
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          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
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            }
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          "value": "Improper neutralization of alternate XSS syntax vulnerability in The Wikimedia Foundation Mediawiki - Wikilove Extension allows Cross-Site Scripting (XSS).The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-63",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-63 Cross-Site Scripting (XSS)"
            }
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2026-04-08T22:02:16.476Z",
        "orgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
        "shortName": "wikimedia-foundation"
      },
      "references": [
        {
          "url": "https://phabricator.wikimedia.org/T416502"
        },
        {
          "url": "https://gerrit.wikimedia.org/r/q/Iab86209478a044504f5a6aea0d8c3d14f21c48b3"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Stored XSS through system messages in WikiLove",
      "x_generator": {
        "engine": "Vulnogram 1.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
    "assignerShortName": "wikimedia-foundation",
    "cveId": "CVE-2026-22711",
    "datePublished": "2026-04-07T18:39:37.410Z",
    "dateReserved": "2026-01-08T23:23:42.385Z",
    "dateUpdated": "2026-04-08T22:02:16.476Z",
    "state": "PUBLISHED"
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}

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-CP48-9XX4-PMJ6

CVE-2026-22711 (GCVE-0-2026-22711)

Tags

Sightings

Nomenclature