02 Records
FEED: ACQUIRING
01 RecordSTATE: PUBLISHED
02 Description
CNA: apacheApache OpenNLP: Arbitrary Class Instantiation via Model Manifest in ExtensionLoader
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.- EPSS probability
- 0.67% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 49.2% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-07-15.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
SCHEMA: 5.2
- Published
- 2026-05-04 16:43Z4 MO AGO
- Last updated
- 2026-07-15 00:58Z1 MO AGO
- Reserved
- 2026-04-23
- Assigning CNA
- apache
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-470Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')Base
- CWE-502Deserialization of Untrusted DataBase
- Data version
- 5.2
- Document digest
- 8d249163671775e1b3ab0bd28298ed376685c9ec0bbc5b4483cd54baf8fd79c7
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
Apache Software FoundationApache OpenNLP2.0 to < 2.5.9, 3.0.0-M1 to < 3.0.0-M3, 0 to < 1.9.5—