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…
Priority MEDIUM 44CWE-776Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.
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.
Why it matters now
EPSS 0.08547 95th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial org.apache.solr:solr-core (Maven): 5.0.0Red Hat: 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Solr | 1.3.0 to 1.4.1; 3.1.0 to 3.6.2; 4.0.0 to 4.10.4 | — | No fix listed | CNA |
| — | org.apache.solr:solr-core (Maven) | before 5.0.0 | 5.0.0 | Patch available | GHSA-jq2w-w7v2-69q5 |
- Solr VendorApache Affected 1.3.0 to 1.4.1; 3.1.0 to 3.6.2; 4.0.0 to 4.10.4 Fixed in — No fix listed CNA
- org.apache.solr:solr-core (Maven) Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available GHSA-jq2w-w7v2-69q5
Remediation
- Fix · GHSA-jq2w-w7v2-69q5 org.apache.solr:solr-core (Maven) Fixed in 5.0.0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Data Virtualization 6 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Enterprise Application Platform 6 | Affected | No fix planned: Out of support scope |
Not affected: 2 products
- Red Hat JBoss Fuse 6
- Red Hat JBoss Fuse Service Works 6
Timeline
- 2026-10-02 Threatist record created from CVE-2019-12401
- 2026-10-03 Alias added: GHSA-jq2w-w7v2-69q5
- 2026-10-16 EPSS moved to the 95th–99th percentile
References
Exploit 1
Advisory 4
Other 16
- [lucene-general] 20190909 [SECURITY] CVE-2019-12401: XML Bomb in Apache Solr versions prior to 5.0
- [lucene-dev] 20190909 [SECURITY] CVE-2019-12401: XML Bomb in Apache Solr versions prior to 5.0
- [lucene-dev] 20190909 [jira] [Resolved] (SOLR-13750) [CVE-2019-12401] XML Bomb in Apache Solr versions prior to 5.0.0
- [announce] 20190909 [SECURITY] CVE-2019-12401: XML Bomb in Apache Solr versions prior to 5.0
- [lucene-solr-user] 20190909 [SECURITY] CVE-2019-12401: XML Bomb in Apache Solr versions prior to 5.0
- [lucene-dev] 20190909 [jira] [Updated] (SOLR-13750) [CVE-2019-12401] XML Bomb in Apache Solr versions prior to 5.0.0
- [lucene-dev] 20190911 [jira] [Commented] (SOLR-13750) [CVE-2019-12401] XML Bomb in Apache Solr versions prior to 5.0.0
- https://issues.apache.org/jira/browse/SOLR-13750
- https://lists.apache.org/thread.html/048ae6e4f84a88e8856f766320b48ad91f9fca2c6f621aa2c40088fe@%3Cdev.lucene.apache.org%3E
- https://lists.apache.org/thread.html/0ec231c5ed8d242890e21806d25fdd47f80cc47cac278d2fc1c9c579@%3Cdev.lucene.apache.org%3E
- https://lists.apache.org/thread.html/1c92300643f48f13bc59b15e3f886ba62bae1798c7d4c2e5c1ece09b@%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/521d10a19bfb590f86dff41820ccfb11e92281f233a12c882650931e@%3Cdev.lucene.apache.org%3E
- https://lists.apache.org/thread.html/60a924662ead9aeea74e8ea128d9ca935f8de925aa71b15ab2787d6a@%3Csolr-user.lucene.apache.org%3E
- https://lists.apache.org/thread.html/7ab5e95a1a0b4f35ffe53f1eb0cb74b4348b49d41b72ac155b843fa2@%3Cgeneral.lucene.apache.org%3E
- https://lists.apache.org/thread.html/db8eaca456d03c00a66cbe37548978318d424b9997e3fd7f5c65dffe@%3Cdev.lucene.apache.org%3E
- https://security.netapp.com/advisory/ntap-20190926-0002
More Apache Solr vulnerabilities
- TI-2024-30303 Apache Solr: Authentication bypass possible using a fake URL Path ending CVSS 3.1CRITICAL 9.8
- TI-2019-13101 Injection in Apache Solr KEVCVSS 3.1HIGH 7.5
- TI-2019-00170 Code injection in Apache Solr KEVCVSS 3.1HIGH 7.2
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2021-09240 SSRF vulnerability with the Replication handler CVSS 3.1CRITICAL 9.8
- TI-2017-09354 XML external entity injection in Apache Solr before 7.1 with Apache Lucene before 7.1 CVSS 3.1CRITICAL 9.8
Sources
- CVE-2019-12401 · CVE Program
- CVE-2019-12401 · NVD
- FIRST EPSS
- GHSA-jq2w-w7v2-69q5 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-12401 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences