GHSA-5p52-j8pw-j7x5: org.bedework:bw-webdav (CVE-2018-20000)

Improper Restriction of XML External Entity Reference in bedework:bw-webdav

CVSS 7.5 HighEPSS 0.017 · 77th percentile

Published by the GitHub Advisory Database at 19 Dec 2018, 19:24 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
org.bedework:bw-webdav	Maven	>=4.0.1, <4.0.3	4.0.3

Identifiers

GHSA-5p52-j8pw-j7x5 · CVE-2018-20000

Weakness (CWE)

CWE-611

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apereo Bedework bw-webdav versions 4.0.1 before 4.0.3 are vulnerable to XML external entity (XXE) attacks. An attacker able to send WebDAV requests can submit a crafted XML document, such as an invite-reply, to read local files on the server. Upgrade to bw-webdav 4.0.3 or later.

Written 8 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.0	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	GitHub Advisory Database

CISA KEV Not listed.
EPSS 0.017, the 77th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 15:13 UTC First seen by agentprime
31 Oct 2026, 15:13 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.