Vulnerability-Lookup

GHSA-M4G4-86QC-V8W7

Vulnerability from github – Published: 2026-08-28 22:19 – Updated: 2026-08-28 22:19

Summary

silverstripe/versioned has XSS in archive admin restore

Details

Impact

It's possible to use the page title as an XSS vector when restoring a page in ArchiveAdmin

Reporter

Steve Boyd Silverstripe Ltd.

Severity

5.4 (Medium)


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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "silverstripe/versioned"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-55779"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-28T22:19:32Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nIt\u0027s possible to use the page title as an XSS vector when restoring a page in ArchiveAdmin\n\n### Reporter\nSteve Boyd\nSilverstripe Ltd.",
  "id": "GHSA-m4g4-86qc-v8w7",
  "modified": "2026-08-28T22:19:32Z",
  "published": "2026-08-28T22:19:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-versioned/security/advisories/GHSA-m4g4-86qc-v8w7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-versioned/pull/541"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-versioned/commit/6e30a2cf8d4b9233690464da61bd0fc4d3e92952"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/versioned/CVE-2026-55779.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/silverstripe/silverstripe-versioned"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-versioned/releases/tag/3.2.1"
    },
    {
      "type": "WEB",
      "url": "https://www.silverstripe.org/download/security-releases/cve-2026-55779"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "silverstripe/versioned has XSS in archive admin restore"
}

CVE-2026-55779 (GCVE-0-2026-55779)

Vulnerability from cvelistv5 – Published: 2026-08-28 22:18 – Updated: 2026-08-28 22:18

Title

Silverstripe Versioned: XSS in archive admin restore

Summary

Silverstripe Versioned provides versioning for Silverstripe models. Prior to 3.2.1, RestoreAction::getRestoreMessage() in src/RestoreAction.php builds ArchiveAdmin restore notifications rendered as CAST_HTML and inserts $restoredItem->Title, $restoredItem->URLSegment, $restoredItem->CMSEditLink(), and $changedProperty['value'] without applying Convert::raw2xml(). When an administrator restores an archived page containing a crafted title or URL segment, the generated restoration message can execute stored JavaScript in the administrator's browser, compromising the confidentiality and integrity of the CMS session. This issue is fixed in version 3.2.1.

Severity

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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

5 references

URL	Tags
https://github.com/silverstripe/silverstripe-vers…	x_refsource_CONFIRM
https://github.com/silverstripe/silverstripe-vers…	x_refsource_MISC
https://github.com/silverstripe/silverstripe-vers…	x_refsource_MISC
https://github.com/silverstripe/silverstripe-vers…	x_refsource_MISC
https://www.silverstripe.org/download/security-re…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
silverstripe	silverstripe-versioned	Affected: < 3.2.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "silverstripe-versioned",
          "vendor": "silverstripe",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.2.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Silverstripe Versioned provides versioning for Silverstripe models. Prior to 3.2.1, RestoreAction::getRestoreMessage() in src/RestoreAction.php builds ArchiveAdmin restore notifications rendered as CAST_HTML and inserts $restoredItem-\u003eTitle, $restoredItem-\u003eURLSegment, $restoredItem-\u003eCMSEditLink(), and $changedProperty[\u0027value\u0027] without applying Convert::raw2xml(). When an administrator restores an archived page containing a crafted title or URL segment, the generated restoration message can execute stored JavaScript in the administrator\u0027s browser, compromising the confidentiality and integrity of the CMS session. This issue is fixed in version 3.2.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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": "2026-08-28T22:18:57.661Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/silverstripe/silverstripe-versioned/security/advisories/GHSA-m4g4-86qc-v8w7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/silverstripe/silverstripe-versioned/security/advisories/GHSA-m4g4-86qc-v8w7"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-versioned/pull/541",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-versioned/pull/541"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-versioned/commit/6e30a2cf8d4b9233690464da61bd0fc4d3e92952",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-versioned/commit/6e30a2cf8d4b9233690464da61bd0fc4d3e92952"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-versioned/releases/tag/3.2.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-versioned/releases/tag/3.2.1"
        },
        {
          "name": "https://www.silverstripe.org/download/security-releases/cve-2026-55779",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.silverstripe.org/download/security-releases/cve-2026-55779"
        }
      ],
      "source": {
        "advisory": "GHSA-m4g4-86qc-v8w7",
        "discovery": "UNKNOWN"
      },
      "title": "Silverstripe Versioned: XSS in archive admin restore"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55779",
    "datePublished": "2026-08-28T22:18:57.661Z",
    "dateReserved": "2026-06-17T14:40:28.379Z",
    "dateUpdated": "2026-08-28T22:18:57.661Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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