CVE-2018-20000 json
Improper Restriction of XML External Entity Reference in bedework:bw-webdav
published 2018-12-10 7 y ago modified 2026-06-17 4 mo ago also GHSA-5p52-j8pw-j7x5 , EUVD-2018-0798
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
Apereo Bedework bw-webdav before 4.0.3 allows XXE attacks, as demonstrated by an invite-reply document that reads a local file, related to webdav/servlet/common/MethodBase.java and webdav/servlet/common/PostRequestPars.java.
Patch / fix
- maven org.bedework:bw-webdav 4.0.3
- apereo bw-webdav 4.0.3
Exploit prediction
1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| GitHub | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.bedework:bw-webdav | >=4.0.1, <4.0.3 |
4.0.3 |
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
github.com
/Bedework/bw-webdav/pull/1
web, patch, third-party-advisory
-
github.com
/Bedework/bw-webdav/compare/bw-webdav-4.0.2...bw-webdav-4.0.3
web, patch, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-20000
advisory
-
github.com
/Bedework/bw-webdav
package
-
github.com
/advisories/GHSA-5p52-j8pw-j7x5
advisory
Sources
- CVE List CVE-2018-20000
- GitHub Advisory GHSA-5p52-j8pw-j7x5
- NVD CVE-2018-20000
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.