Critical
Security advisory
Chamilo LMS version 11.x contains an Unserialization vulnerability in the "hash" GET parameter for the api endpoint located at /webservices/api/v2.php that can result in Unauthenticated remote code execution. This attack appear to be exploitable via a simple GET request to the api endpoint. This vulnerability appears to have been fixed in After commit 0de84700648f098c1fbf6b807dee28ec640efe62.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-1999019
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:43 UTC · Revision 1
Source evidence
Chamilo LMS version 11.x contains an Unserialization vulnerability in the "hash" GET parameter for the api endpoint located at /webservices/api/v2.php that can result in Unauthenticated remote code execution. This attack appear to be exploitable via a simple GET request to the api endpoint. This vulnerability appears to have been fixed in After commit 0de84700648f098c1fbf6b807dee28ec640efe62.
osv:CVE-2018-1999019
Complete source record
{
"id": "4bd00cac84c574840d5a6f891e875135363eaa2ab446f70533a54f61bc879730",
"url": "https://osv.dev/vulnerability/CVE-2018-1999019",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-1999019",
"summary": "Chamilo LMS version 11.x contains an Unserialization vulnerability in the \"hash\" GET parameter for the api endpoint located at /webservices/api/v2.php that can result in Unauthenticated remote code execution. This attack appear to be exploitable via a simple GET request to the api endpoint. This vulnerability appears to have been fixed in After commit 0de84700648f098c1fbf6b807dee28ec640efe62.",
"evidence": "osv:CVE-2018-1999019",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2018-1999019",
"aliases": [
"CVE-2018-1999019"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/chamilo/chamilo-lms",
"type": "GIT",
"events": [
{
"introduced": "0bf136a473502f7432e01cb576c59f453badd81f"
},
{
"last_affected": "6de5de7f0e6bec7b7699077c4fdef436c0ff4d25"
},
{
"fixed": "0de84700648f098c1fbf6b807dee28ec640efe62"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:chamilo:chamilo_lms:1.11.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.0-NA"
},
{
"last_affected": "1.11.0-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:chamilo:chamilo_lms:1.11.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.2"
},
{
"last_affected": "1.11.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:chamilo:chamilo_lms:1.11.4:-:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.4-NA"
},
{
"last_affected": "1.11.4-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:chamilo:chamilo_lms:1.11.6:-:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.6-NA"
},
{
"last_affected": "1.11.6-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:chamilo:chamilo_lms:1.11.8:-:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.8-NA"
},
{
"last_affected": "1.11.8-NA"
}
],
"source": "CPE_STRING"
},
{
"range": [
{
"fixed": "0de84700648f098c1fbf6b807dee28ec640efe62"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"1.11.0-NA",
"1.11.2",
"1.11.4-NA",
"1.11.6-NA",
"1.11.8-NA"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1999019.json"
}
}
],
"modified": "2026-10-20T10:51:25.466244024Z",
"provider": "osv",
"references": [
"https://ibb.co/jBxe6y",
"https://github.com/chamilo/chamilo-lms/commit/0de84700648f098c1fbf6b807dee28ec640efe62"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:alpha2:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta1:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta2:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta3:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta4:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta5:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta6:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta7:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.0:rc1:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.4:alpha1:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.4:alpha2:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.4:beta1:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.4:rc1:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.6:alpha1:*:*:*:*:*:*",
"cpe:2.3:a:chamilo:chamilo_lms:1.11.8:rc1:*:*:*:*:*:*"
],
"vendor_product": "chamilo:chamilo_lms",
"extracted_events": [
{
"range": [
{
"introduced": "1.11.0-alpha2"
},
{
"last_affected": "1.11.0-alpha2"
},
{
"introduced": "1.11.0-beta1"
},
{
"last_affected": "1.11.0-beta1"
},
{
"introduced": "1.11.0-beta2"
},
{
"last_affected": "1.11.0-beta2"
},
{
"introduced": "1.11.0-beta3"
},
{
"last_affected": "1.11.0-beta3"
},
{
"introduced": "1.11.0-beta4"
},
{
"last_affected": "1.11.0-beta4"
},
{
"introduced": "1.11.0-beta5"
},
{
"last_affected": "1.11.0-beta5"
},
{
"introduced": "1.11.0-beta6"
},
{
"last_affected": "1.11.0-beta6"
},
{
"introduced": "1.11.0-beta7"
},
{
"last_affected": "1.11.0-beta7"
},
{
"introduced": "1.11.0-rc1"
},
{
"last_affected": "1.11.0-rc1"
},
{
"introduced": "1.11.4-alpha1"
},
{
"last_affected": "1.11.4-alpha1"
},
{
"introduced": "1.11.4-alpha2"
},
{
"last_affected": "1.11.4-alpha2"
},
{
"introduced": "1.11.4-beta1"
},
{
"last_affected": "1.11.4-beta1"
},
{
"introduced": "1.11.4-rc1"
},
{
"last_affected": "1.11.4-rc1"
},
{
"introduced": "1.11.6-alpha1"
},
{
"last_affected": "1.11.6-alpha1"
},
{
"introduced": "1.11.8-rc1"
},
{
"last_affected": "1.11.8-rc1"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-1999019",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 382552,
"published_at": "2018-07-23T15:29:00.707+00:00"
}