Raw JSON
{
"containers": {
"cna": {
"affected": [
{
"product": "advisory Pre-authentication",
"vendor": "Security",
"versions": [
{
"status": "affected",
"version": "unknown"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "disclosure via Fulldisclosure"
}
],
"descriptions": [
{
"lang": "en",
"value": "0day Rubbish Research Team is publicly disclosing a vulnerability in Output Messenger Server 2.0.x (>= 2.0.63) (Srimax \nSoftware (Output Technology)). The research is published and a proof-of-concept is available.\n\nPre-authentication SYSTEM RCE (Zip-Slip plugin planting) (CVSS 9.8, pre-authentication)\n\nOutput Messenger Server 2.0.x accepts XMPP connections on TCP 14121 with no SASL and no credentials; every connection \nis treated as authenticated. Through linkserver registration and the file-transfer listener, an unauthenticated \nattacker uploads a crafted ZIP whose entries escape the plugin directory (Zip-Slip in SharpZipLib 0.85.4). On service \nrestart, the planted plugin constructor executes as LocalSystem. Dynamically verified.\n\nImpact: Full compromise of the on-premise enterprise instant-messaging server as LocalSystem. The attacker can read \ncorporate communications, execute arbitrary commands, and move laterally inside the office network.\n\nAdvisory: https://0day-rubbish.com/blog/output-messenger-unauth-zipslip-plugin-rce\n\nPoC and full analysis: https://github.com/Exploit-Garbage/0day-Rubbish\n\nVendor has been notified. CVE ID is pending.\n\n-- \n0day Rubbish Research Team\nhttps://0day-rubbish.com\n_______________________________________________\nSent through the Full Disclosure mailing list\nhttps://nmap.org/mailman/listinfo/fulldisclosure\nWeb Archives & RSS: https://seclists.org/fulldisclosure/"
}
],
"providerMetadata": {
"dateUpdated": "2026-09-11T11:51:24Z",
"orgId": "4e2abfbf-4a2a-4b76-a4e0-d77c18ba156c",
"shortName": "VULNARCHIVE"
},
"references": [
{
"tags": [
"technical-description",
"exploit"
],
"url": "https://vuln.freearchive.org/archive/full-disclosure/2026/Aug/65"
},
{
"tags": [
"technical-description"
],
"url": "https://seclists.org/fulldisclosure/2026/Aug/65"
},
{
"url": "https://0day-rubbish.com"
},
{
"url": "https://0day-rubbish.com/blog/output-messenger-unauth-zipslip-plugin-rce"
},
{
"url": "https://github.com/Exploit-Garbage/0day-Rubbish"
},
{
"url": "https://nmap.org/mailman/listinfo/fulldisclosure"
},
{
"url": "https://seclists.org/fulldisclosure/"
}
],
"source": {
"defect": [
"https://seclists.org/fulldisclosure/2026/Aug/65"
],
"discovery": "EXTERNAL"
},
"title": "Security advisory: Pre-authentication SYSTEM RCE (Zip-Slip plugin planting) in Output Messenger Server 2.0.x (>= 2.0.63) (Srimax Software (Output Technology))",
"x_gcve": [
{
"recordType": "advisory",
"relationships": [],
"vulnId": "GCVE-1988-2026-0128",
"x_vulnarchive": {
"archiveUrl": "https://vuln.freearchive.org/archive/full-disclosure/2026/Aug/65",
"automated": true,
"contentSha256": "1a92cd811d62d57463faa0478429c3f7161b89c57498277dd6b0195e0eb81e9d",
"evidenceScore": 9,
"messageId": "",
"originalUrl": "https://seclists.org/fulldisclosure/2026/Aug/65",
"policy": "vulnarchive-1",
"sourceFormat": "text/html",
"sourcePublishedAt": "2026-08-18T06:05:35Z"
}
}
]
}
},
"cveMetadata": {
"assignerOrgId": "4e2abfbf-4a2a-4b76-a4e0-d77c18ba156c",
"assignerShortName": "VULNARCHIVE",
"datePublished": "2026-09-07T13:20:22Z",
"dateUpdated": "2026-09-11T11:51:24Z",
"state": "PUBLISHED",
"vulnId": "GCVE-1988-2026-0128"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}