CVE-2018-1000823 json
exist-db:exist-core XML External Entity (XXE) vulnerability
published 2018-12-20 7 y ago modified 2026-06-17 4 mo ago also GHSA-jxm5-5xcw-h57q , EUVD-2018-0815
- cvss
- 10.0
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
exist version <= 5.0.0-RC4 contains a XML External Entity (XXE) vulnerability in XML Parser for REST Server that can result in Disclosure of confidential data, denial of service, SSRF, port scanning.
Patch / fix
- maven org.exist-db:exist-core 5.1.0
- exist-db exist 5.0.0
- github.com/eXist-db/exist@1c3f0ae commit
- github.com/eXist-db/exist@b210f9f commit
- github.com/eXist-db/exist#2243 pull request
- github.com/eXist-db/exist#2247 pull request
Exploit prediction
1.88% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.exist-db:exist-core | <5.1.0 |
5.1.0 |
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
github.com
/eXist-db/exist/pull/2243
web
-
github.com
/eXist-db/exist/pull/2247
web
-
github.com
/eXist-db/exist/commit/1c3f0aec14d00bdbca175713af70cb7c7b868e9f
web
-
github.com
/eXist-db/exist/commit/b210f9fbf379b68842f2b055dda80d7e7479e96f
web
-
0dd.zone
/2018/10/27/exist-XXE/
third-party-advisory
-
github.com
/eXist-db/exist/issues/2180
web, issue-tracking, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-1000823
advisory
-
0dd.zone
/2018/10/27/exist-XXE
web
-
github.com
/advisories/GHSA-jxm5-5xcw-h57q
advisory
-
github.com
/eXist-db/exist
package
Sources
- CVE List CVE-2018-1000823
- GitHub Advisory GHSA-jxm5-5xcw-h57q
- NVD CVE-2018-1000823
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