getXpathResult(xmlXPathObjectPtr xpathObj, int index)
{
    xmlNode *match = NULL;
    int max = numXpathResults(xpathObj);

    CRM_CHECK(index >= 0, return NULL);
    CRM_CHECK(xpathObj != NULL, return NULL);

    if (index >= max) {
        crm_err("Requested index %d of only %d items", index, max);
        return NULL;

    } else if(xpathObj->nodesetval->nodeTab[index] == NULL) {
        /* Previously requested */
        return NULL;
    }

    match = xpathObj->nodesetval->nodeTab[index];
    CRM_CHECK(match != NULL, return NULL);

    if (xpathObj->nodesetval->nodeTab[index]->type != XML_NAMESPACE_DECL) {
        /* See the comment for freeXpathObject() */
        xpathObj->nodesetval->nodeTab[index] = NULL;
    }

    if (match->type == XML_DOCUMENT_NODE) {
        /* Will happen if section = '/' */
        match = match->children;

    } else if (match->type != XML_ELEMENT_NODE
               && match->parent && match->parent->type == XML_ELEMENT_NODE) {
        /* reurning the parent instead */
        match = match->parent;

    } else if (match->type != XML_ELEMENT_NODE) {
        /* We only support searching nodes */
        crm_err("We only support %d not %d", XML_ELEMENT_NODE, match->type);
        match = NULL;
    }
    return match;
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.