Vulnerability-Lookup

CVE-2026-48527 (GCVE-0-2026-48527)

Vulnerability from cvelistv5 – Published: 2026-05-29 12:26 – Updated: 2026-05-29 13:02

Title

HaxCMS has a stored Cross-Site Scripting (XSS) bypass in saveNode endpoint

Summary

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue.

Severity

8.7 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-29 13:02 UTC

CWE

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

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/haxtheweb/issues/security/advi…	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version	CPE status
haxtheweb	haxcms-nodejs	Affected: < 26.0.1	guessed
haxtheweb	haxcms-php	Affected: < 26.0.2	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-48527",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-29T13:02:45.553797Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-29T13:02:50.194Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "haxcms-nodejs",
          "vendor": "haxtheweb",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.0.1"
            }
          ]
        },
        {
          "product": "haxcms-php",
          "vendor": "haxtheweb",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.0.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/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": "2026-05-29T12:26:07.972Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
        }
      ],
      "source": {
        "advisory": "GHSA-g2g8-95qg-v35h",
        "discovery": "UNKNOWN"
      },
      "title": "HaxCMS has a stored Cross-Site Scripting (XSS) bypass in saveNode endpoint"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-48527",
    "datePublished": "2026-05-29T12:26:07.972Z",
    "dateReserved": "2026-05-21T16:18:10.619Z",
    "dateUpdated": "2026-05-29T13:02:50.194Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-48527",
      "date": "2026-09-18",
      "epss": "0.00228",
      "percentile": "0.13867"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "haxcms-nodejs",
                "vendor": "haxtheweb",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 26.0.1"
                  }
                ]
              },
              {
                "product": "haxcms-php",
                "vendor": "haxtheweb",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 26.0.2"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue."
          },
          {
            "lang": "es",
            "value": "HAX CMS ayuda a gestionar el universo de micrositios con backends de PHP o NodeJs. Las versiones hasta la 26.0.0 inclusive est\u00e1n afectadas por una vulnerabilidad de cross-site scripting (XSS) almacenado en el endpoint `/system/api/saveNode`. Un usuario autenticado con permiso para editar p\u00e1ginas puede eludir el saneador HTML inyectando un atributo de gestor de eventos sin espacios en blanco antes del nombre del atributo. @haxtheweb/haxcms-nodejs 26.0.1 y haxcms-php 26.0.2 parchean el problema."
          }
        ],
        "id": "CVE-2026-48527",
        "lastModified": "2026-07-21T12:10:00.090",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.3,
              "impactScore": 5.8,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-48527",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-29T13:02:45.553797Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-05-29T13:16:23.133",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-06-05T19:12:54+00:00",
      "cve": "CVE-2026-48527",
      "id": "CVE-2026-48527",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "HaxCMS has a stored Cross-Site Scripting (XSS) bypass in saveNode endpoint",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48527.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-48527",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-29T13:02:45.553797Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-29T13:02:37.548Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "haxcms-nodejs",
              "vendor": "haxtheweb",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 26.0.1"
                }
              ]
            },
            {
              "product": "haxcms-php",
              "vendor": "haxtheweb",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 26.0.2"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/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": "2026-05-29T12:26:07.972Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
            }
          ],
          "source": {
            "advisory": "GHSA-g2g8-95qg-v35h",
            "discovery": "UNKNOWN"
          },
          "title": "HaxCMS has a stored Cross-Site Scripting (XSS) bypass in saveNode endpoint"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-48527",
        "datePublished": "2026-05-29T12:26:07.972Z",
        "dateReserved": "2026-05-21T16:18:10.619Z",
        "dateUpdated": "2026-05-29T13:02:50.194Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-48527

Vulnerability from fkie_nvd - Published: 2026-05-29 13:16 - Updated: 2026-07-21 12:10

Severity

8.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "haxcms-nodejs",
          "vendor": "haxtheweb",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.0.1"
            }
          ]
        },
        {
          "product": "haxcms-php",
          "vendor": "haxtheweb",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.0.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue."
    },
    {
      "lang": "es",
      "value": "HAX CMS ayuda a gestionar el universo de micrositios con backends de PHP o NodeJs. Las versiones hasta la 26.0.0 inclusive est\u00e1n afectadas por una vulnerabilidad de cross-site scripting (XSS) almacenado en el endpoint `/system/api/saveNode`. Un usuario autenticado con permiso para editar p\u00e1ginas puede eludir el saneador HTML inyectando un atributo de gestor de eventos sin espacios en blanco antes del nombre del atributo. @haxtheweb/haxcms-nodejs 26.0.1 y haxcms-php 26.0.2 parchean el problema."
    }
  ],
  "id": "CVE-2026-48527",
  "lastModified": "2026-07-21T12:10:00.090",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-48527",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-29T13:02:45.553797Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-29T13:16:23.133",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-G2G8-95QG-V35H

Vulnerability from github – Published: 2026-05-29 14:07 – Updated: 2026-06-09 10:27

Summary

HaxCMS has a stored Cross-Site Scripting (XSS) bypass in its saveNode endpoint

Details

Summary

HaxCMS is affected by a stored cross-site scripting (XSS) vulnerability in the /system/api/saveNode endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name.

For example, the sanitizer misses:

<a href="#"onclick="alert('kn1ph')">click me</a>

The important bypass is:

href="#"onclick=

The payload is stored in the generated page files and executes when a user clicks the injected link.

Details

The issue is caused by regex-based HTML sanitization that expects whitespace before event handler attributes. Because the sanitizer expects a pattern like:

href="#" onclick="..."

It fails to remove an event handler when it is written without whitespace:

href="#"onclick="..."

Browsers still parse onclick as a valid event handler attribute, so the JavaScript executes when the element is clicked.

Affected endpoint:

POST /system/api/saveNode?site_token=[VALID_SITE_TOKEN]

Affected parameter:

node.body

PoC

Log in to HaxCMS and edit any existing page.
Capture the page save request in Burp Suite:

POST /system/api/saveNode?site_token=[VALID_SITE_TOKEN]

In the JSON request body, modify only the node.body value.

Change:

"body":"...existing page content...\n"

To:

"body":"...existing page content...\n<a href=\"#\"onclick=\"alert('kn1ph')\">click me</a>\n"

Forward the request.
Open the edited page and click click me.

Result:

The JavaScript will execute and the alert will pop up.

It was confirmed that the payload is stored in the generated page files, including index.html.

Impact

An authenticated user with permissions to edit the page can inject stored JavaScript into the page content. If a privileged user interacts with the injected element while authenticated, the attacker controlled JavaScript will execute in that user’s browser.

Based on local testing, the XSS can access browser-exposed HaxCMS data such as localStorage.jwt and window.appSettings, including API paths and tokens available to the authenticated user.

This may allow an attacker to perform actions as the victim within the limits of the exposed tokens and the victim’s permissions and possibly chain more vulnerabilities.

Severity

8.7 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 26.0.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@haxtheweb/haxcms-nodejs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-48527"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-29T14:07:51Z",
    "nvd_published_at": "2026-05-29T13:16:23Z",
    "severity": "HIGH"
  },
  "details": "## Summary\n\nHaxCMS is affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name.\n\nFor example, the sanitizer misses:\n\n```html\n\u003ca href=\"#\"onclick=\"alert(\u0027kn1ph\u0027)\"\u003eclick me\u003c/a\u003e\n```\n\nThe important bypass is:\n\n```html\nhref=\"#\"onclick=\n```\n\nThe payload is stored in the generated page files and executes when a user clicks the injected link.\n\n## Details\n\nThe issue is caused by regex-based HTML sanitization that expects whitespace before event handler attributes. Because the sanitizer expects a pattern like:\n\n```html\nhref=\"#\" onclick=\"...\"\n```\n\nIt fails to remove an event handler when it is written without whitespace:\n\n```html\nhref=\"#\"onclick=\"...\"\n```\n\nBrowsers still parse `onclick` as a valid event handler attribute, so the JavaScript executes when the element is clicked.\n\nAffected endpoint:\n\n```text\nPOST /system/api/saveNode?site_token=[VALID_SITE_TOKEN]\n```\n\nAffected parameter:\n\n```text\nnode.body\n```\n\n## PoC\n\n1. Log in to HaxCMS and edit any existing page.\n\n2. Capture the page save request in Burp Suite:\n\n```text\nPOST /system/api/saveNode?site_token=[VALID_SITE_TOKEN]\n```\n3. In the JSON request body, modify only the `node.body` value.\n\nChange:\n```json\n\"body\":\"...existing page content...\\n\"\n```\nTo:\n```json\n\"body\":\"...existing page content...\\n\u003ca href=\\\"#\\\"onclick=\\\"alert(\u0027kn1ph\u0027)\\\"\u003eclick me\u003c/a\u003e\\n\"\n```\n\n5. Forward the request.\n\n6. Open the edited page and click `click me`.\n\nResult:\n\nThe JavaScript will execute and the alert will pop up. \n\nIt was confirmed that the payload is stored in the generated page files, including `index.html`.\n\n## Impact\n\nAn authenticated user with permissions to edit the page can inject stored JavaScript into the page content. If a privileged user interacts with the injected element while authenticated, the attacker controlled JavaScript will execute in that user\u2019s browser.\n\nBased on local testing, the XSS can access browser-exposed HaxCMS data such as `localStorage.jwt` and `window.appSettings`, including API paths and tokens available to the authenticated user.\n\nThis may allow an attacker to perform actions as the victim within the limits of the exposed tokens and the victim\u2019s permissions and possibly chain more vulnerabilities.",
  "id": "GHSA-g2g8-95qg-v35h",
  "modified": "2026-06-09T10:27:09Z",
  "published": "2026-05-29T14:07:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48527"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/haxtheweb/issues"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "HaxCMS has a stored Cross-Site Scripting (XSS) bypass in its saveNode endpoint"
}

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.

Action not permitted

CVE-2026-48527 (GCVE-0-2026-48527)

FKIE_CVE-2026-48527

GHSA-G2G8-95QG-V35H

Summary

Details

PoC

Impact

Tags

Sightings

Nomenclature

Related by attack behaviour