CVE-2019-12401

mediumpriority · track · 43EPSS 0.085 · 95 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

8.55% (95th) EPSS

CVSS 5 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-776USprimaryCWE-776US

exploits (1)

Public proof-of-concept and weaponised exploit code.

mbadanoiu/CVE-2019-12401CVE-2019-12401: XML Bomb in Apache SolrPoC · poc_in_github

affected products (7)

Products and version ranges known to be affected.

Apache Solr≤ 1.3.0 to 1.4.1enisa_euvdEU
Apache Solr≤ 4.0.0 to 4.10.4enisa_euvdEU
Apache Solr≤ 3.1.0 to 3.6.2enisa_euvdEU
apache solr1.3.0 → 1.4.1nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr3.1 → 3.6.2nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr4.0.0 → 4.10.4nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
Maven org.apache.solr:solr-core< 5.0.0osvUSpkg:maven/org.apache.solr/solr-core

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-jq2w-w7v2-69q5Apache Solr vulnerable to XML Bomb2022-05-24ghsa · osvUS
Solr versions prior to 5.0.0 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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2019-09-10modified 2026-06-17

related (130)

Related entries.

ID	severity	EPSS	exploitable	published
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Kirby is a content management system. A vulnerability in versions prior to 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6 only affects Kirby sites that use the `Xml` data handler (e…
CVE-2019-5427US	high7.5	4.88% (92nd)	Exploit	2019-04-22
c3p0 version < 0.9.5.4 may be exploited by a billion laughs attack when loading XML configuration due to missing protections against recursive entity expansion when loading configu…
CVE-2024-28757US	high7.5	2.01% (81st)	Exploit	2024-03-10
libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).
CVE-2014-2228US	critical9.8	3.31% (88th)	—	2020-02-19
The XStream extension in HP Fortify SCA before 2.2 RC3 allows remote attackers to execute arbitrary code via unsafe deserialization of XML messages.

+125 more

references (35)

External citations — patches, advisories, analysis.

scry

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