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Public proof of conceptFix available

CVE-2019-12401

A public proof of concept exists; no exploitation attested.

  • Published2019-09-10
  • WeaknessCWE-776

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2019-09-1015:15CVE publishedNVD

Versions per branch

NVD · OSV
Apache solr
BranchAffectedFixed in
1.x≥ 1.3.0, ≤ 1.4.1no fix published
3.x≥ 3.1, ≤ 3.6.2no fix published
4.x≥ 4.0.0, ≤ 4.10.4no fix published
solr-core
BranchAffectedFixed in
5.0< 5.0.05.0.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2019-12401 Red Hat Product Security2 known affected

    solr: XML resource consumption attack via update handler

    solr-core as a component of Red Hat JBoss Data Virtualization 6 · solr-core as a component of Red Hat JBoss Enterprise Application Platform 6

Full record on NVD

Fix

  1. No fix planned, says the vendor Red Hat Product Security CVE-2019-12401 · 2 productsOut of support scope

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2019-09-10
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-jq2w-w7v2-69q5

Frequently asked questions

What is CVE-2019-12401?

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.

Is CVE-2019-12401 actively exploited?

Active exploitation of CVE-2019-12401 has not been confirmed. Its EPSS score was 8.5% on 2026-11-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-12401?

CVE-2019-12401 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record