CVE-2026-40682
critical
CVSS v3
9.1
CVSS v2
—
VIR risk
9.1
Description
Apache OpenNLP DictionaryEntryPersistor Vulnerable to XML External Entity (XXE) via Unsanitized Dictionary Parsing
Predictions
Exploit likelihood
94%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: security@apache.org — https://lists.apache.org/thread/r6jpt0qr9nj67gqhppqg7jxf8vsbo0w6
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-40682
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 2.5.9-1 |
| debian | sid | fixed | 2.5.9-1 |
| debian | trixie | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Maven | org.apache.opennlp:opennlp-tools | <2.5.9 | 2.5.9 |
| Maven | org.apache.opennlp:opennlp-tools | >=3.0.0-M1,<3.0.0-M3 | 3.0.0-M3 |
| MAVEN | org.apache.opennlp:opennlp-tools | >= 3.0.0-M1, < 3.0.0-M3 | 3.0.0-M3 |
| MAVEN | org.apache.opennlp:opennlp-tools | < 2.5.9 | 2.5.9 |
References
- https://security-tracker.debian.org/tracker/CVE-2026-40682
- https://lists.apache.org/thread/r6jpt0qr9nj67gqhppqg7jxf8vsbo0w6
- http://www.openwall.com/lists/oss-security/2026/05/01/19
- https://nvd.nist.gov/vuln/detail/CVE-2026-40682
- https://github.com/apache/opennlp
- https://github.com/advisories/GHSA-4v8g-86x5-3vrc
CWEs
CWE-611
Verify integrity in audit chain (admin only). AS-IS.