CVE-2023-0871 json
An XML External Entity injection vulnerability
published 2023-08-11 3 y ago modified 2026-06-17 4 mo ago also GHSA-2qc8-r663-v864 , EUVD-2023-2186
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
XXE injection in /rtc/post/ endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to XML external entity (XXE) injection, which can be used for instance to force Horizon to make arbitrary HTTP requests to internal and external services. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 or newer. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet. OpenNMS thanks Erik Wynter and Moshe Apelbaum for reporting this issue.
Patch / fix
- maven org.opennms.core:org.opennms.core.xml 32.0.2
- The OpenNMS Group Horizon 32.0.2
- The OpenNMS Group Meridian 2020.1.38, 2021.1.30, 2022.1.19, 2023.1.6
- github.com/OpenNMS/opennms@5a3b0b6 commit
- github.com/OpenNMS/opennms#6355 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.opennms.core:org.opennms.core.xml | >=31.0.8, <32.0.2 |
32.0.2 |
Affected products
- The OpenNMS Group Horizon
- The OpenNMS Group Meridian
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
Sources
- CVE List CVE-2023-0871
- GitHub Advisory GHSA-2qc8-r663-v864
- NVD CVE-2023-0871
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.