Critical severity9.0NVD Advisory· Published Dec 20, 2018· Updated Jun 17, 2026

CVE-2018-1000836

Description

bw-calendar-engine version <= bw-calendar-engine-3.12.0 contains a XML External Entity (XXE) vulnerability in IscheduleClient XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via Man in the Middle or malicious server.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
org.bedework.caleng:bw-calendar-engineMaven	<= 3.12.2	—

Affected products

Apereo/Bw Calendar Engine
cpe:2.3:a:apereo:bw-calendar-engine:*:*:*:*:*:*:*:*
Range: <=3.12.0
ghsa-coords
pkg:maven/org.bedework.caleng/bw-calendar-engine
Range: <= 3.12.2

Patches

Vulnerability mechanics

References

0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitM/nvdThird Party Advisory
github.com/Bedework/bw-calendar-engine/issues/3nvdThird Party AdvisoryWEB
github.com/advisories/GHSA-xmvg-w4f9-99r7ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2018-1000836ghsaADVISORY
0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitMghsaWEB

News mentions

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cvss	0.585
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000