High
Security advisory
Solr versions 1.3.0 to 1.4.1, 3.1.0 to 3.6.2 and 4.0.0 to 4.10.4 are vulnerable to an XML resource consumption attack (a.k.a. Lol Bomb) via it’s update handler.?By leveraging XML DOCTYPE and ENTITY type elements, the attacker can create a pattern that will expand when the server parses the XML causing OOMs.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-12401
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:21 UTC · Revision 1
Source evidence
Solr versions 1.3.0 to 1.4.1, 3.1.0 to 3.6.2 and 4.0.0 to 4.10.4 are vulnerable to an XML resource consumption attack (a.k.a. Lol Bomb) via it’s update handler.?By leveraging XML DOCTYPE and ENTITY type elements, the attacker can create a pattern that will expand when the server parses the XML causing OOMs.
osv:CVE-2019-12401
Complete source record
{
"id": "f7d9288dcbbb4c28e5b24f43ee82fe6467bbca03e6aac9c8af7e4259f8ace3ac",
"url": "https://osv.dev/vulnerability/CVE-2019-12401",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-12401",
"summary": "Solr versions 1.3.0 to 1.4.1, 3.1.0 to 3.6.2 and 4.0.0 to 4.10.4 are vulnerable to an XML resource consumption attack (a.k.a. Lol Bomb) via it’s update handler.?By leveraging XML DOCTYPE and ENTITY type elements, the attacker can create a pattern that will expand when the server parses the XML causing OOMs.",
"evidence": "osv:CVE-2019-12401",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2019-12401",
"aliases": [
"CVE-2019-12401",
"GHSA-jq2w-w7v2-69q5"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/apache/lucene-solr",
"type": "GIT",
"events": [
{
"introduced": "6de56f9cbd200a23df974e7bcc2957c4526d7283"
},
{
"last_affected": "7012c5edf194729031cea4d788597367543f5ead"
},
{
"introduced": "c64739498056fd5c03acd76077b25de41a38075b"
},
{
"last_affected": "8670d0078251adaba093d64dba76317e46ae6ac9"
},
{
"introduced": "30b22298bacb5238437864128bc9005d49d0d3ed"
},
{
"last_affected": "69175ad4fe8d224ad6a348d05f686105999a92e8"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.3.0"
},
{
"last_affected": "1.4.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.1"
},
{
"last_affected": "3.6.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.10.4"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12401.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/apache/solr",
"type": "GIT",
"events": [
{
"introduced": "6de56f9cbd200a23df974e7bcc2957c4526d7283"
},
{
"last_affected": "7012c5edf194729031cea4d788597367543f5ead"
},
{
"introduced": "c64739498056fd5c03acd76077b25de41a38075b"
},
{
"last_affected": "8670d0078251adaba093d64dba76317e46ae6ac9"
},
{
"introduced": "30b22298bacb5238437864128bc9005d49d0d3ed"
},
{
"last_affected": "69175ad4fe8d224ad6a348d05f686105999a92e8"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.3.0"
},
{
"last_affected": "1.4.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.1"
},
{
"last_affected": "3.6.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.10.4"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12401.json"
}
}
],
"modified": "2026-10-24T10:30:38.228067074Z",
"provider": "osv",
"references": [
"https://lists.apache.org/thread.html/048ae6e4f84a88e8856f766320b48ad91f9fca2c6f621aa2c40088fe%40%3Cdev.lucene.apache.org%3E",
"https://lists.apache.org/thread.html/0ec231c5ed8d242890e21806d25fdd47f80cc47cac278d2fc1c9c579%40%3Cdev.lucene.apache.org%3E",
"https://lists.apache.org/thread.html/1c92300643f48f13bc59b15e3f886ba62bae1798c7d4c2e5c1ece09b%40%3Cannounce.apache.org%3E",
"https://lists.apache.org/thread.html/521d10a19bfb590f86dff41820ccfb11e92281f233a12c882650931e%40%3Cdev.lucene.apache.org%3E",
"https://lists.apache.org/thread.html/60a924662ead9aeea74e8ea128d9ca935f8de925aa71b15ab2787d6a%40%3Csolr-user.lucene.apache.org%3E",
"https://lists.apache.org/thread.html/7ab5e95a1a0b4f35ffe53f1eb0cb74b4348b49d41b72ac155b843fa2%40%3Cgeneral.lucene.apache.org%3E",
"https://lists.apache.org/thread.html/db8eaca456d03c00a66cbe37548978318d424b9997e3fd7f5c65dffe%40%3Cdev.lucene.apache.org%3E",
"https://security.netapp.com/advisory/ntap-20190926-0002/",
"https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2019-12401-XML%20Bomb-Apache%20Solr"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2019-12401",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434389,
"published_at": "2019-09-10T15:15:11.737+00:00"
}