Opennlp
Vendor:
First CVE: Oct 3, 2017 · Active for 8 years
5
Total CVEs
More Total CVEs than 77% of tracked products
2.5
Avg CVEs / Year
Higher CVE frequency than 74% of tracked products
8.7
Avg CVSS
Higher Avg CVSS than 78% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Opennlp over time
Volume of CVEsAvg CVSS Base Score
First CVE
Oct 3, 2017
8 years ago
Most Recent CVE
Jul 6, 2026
18 days ago
CVE Severity & Scoring
Opennlp5 CVEs
40%
60%
All CVEs352,231 CVEs
45%
40%
11%
HighCritical
Attack Vector
Local0 (0.0%)
Network5 (100.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low5 (100.0%)
High0 (0.0%)
Unknown0 (0.0%)
User Interaction
None5 (100.0%)
Unknown0 (0.0%)
Required0 (0.0%)
Privileges Required
Low0 (0.0%)
High0 (0.0%)
None5 (100.0%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (5 CVEs).
5 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-42027CRITICAL Arbitrary Class Instantiation via Model Manifest in Apache OpenNLP ExtensionLoader
Versions Affected: before 1.9.5, before 2.5.9, before 3.0.0-M3
Description:
The Exten | May 4, 2026 | 9.8 | 41 | NO | NO |
CVE-2026-43825HIGH Untrusted Java Deserialization in Apache OpenNLP SvmDoccatModel
Versions Affected:
before 3.0.0-M4 (libsvm document categorization module; introduced in
OPENNLP-1808 and only | Jul 6, 2026 | 7.3 | 39 | NO | NO |
CVE-2026-40682CRITICAL XML External Entity (XXE) via Unsanitized Dictionary Parsing in Apache OpenNLP DictionaryEntryPersistor
Versions Affected: before 2.5.9, before 3.0.0-M3
Description: The Dictio | May 4, 2026 | 9.1 | 38 | NO | NO |
CVE-2026-42440HIGH OOM Denial of Service via Unbounded Array Allocation in Apache OpenNLP AbstractModelReader
Versions Affected:
before 1.9.5
before 2.5.9
before 3.0.0-M3
Description:
The Ab | May 4, 2026 | 7.5 | 34 | NO | NO |
CVE-2017-12620CRITICAL When loading models or dictionaries that contain XML it is possible to perform an XXE attack, since Apache OpenNLP is a library, this only affects applications that load models or | Oct 3, 2017 | 9.8 | 33 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (5 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (5 CVEs).
Media Mentions
Signals from CVEs in this product scope (5 CVEs).
Top CNAs Publishing CVEs For Opennlp
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 3.0.0 | 4 | 8.3 | 3.3% | 0 | 0 |
| 1.8.1 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.8.0 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.7.2 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.7.1 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.7.0 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.6.0 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.5.3 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.5.2 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.5.1 | 1 | 9.8 | 3.0% | 0 | 0 |
| 1.5.0 | 1 | 9.8 | 3.0% | 0 | 0 |