CVE-2018-1000836

Name: CVE-2018-1000836
Creator: NVD / NIST
Published: 2018-12-20T15:29:01.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.13%

Last modified Jun 17, 2026

CVE-2018-1000836 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.13%

62.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-611

Affected Software

Vendor	Product	Versions
Apereo	Bw-Calendar-Engine	<= 3.12.0

References

https://0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitM/Third Party Advisory
https://github.com/Bedework/bw-calendar-engine/issues/3Third Party Advisory
https://0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitM/Third Party Advisory
https://github.com/Bedework/bw-calendar-engine/issues/3Third Party Advisory

Timeline

Published: Dec 20, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000836?

How severe is CVE-2018-1000836?

Severity scoring for CVE-2018-1000836 is pending analysis. The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000836?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-1000836?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST