CVE-2017-18084 — The usermacros resource in Atlassian Confluence Server before version 6

The usermacros resource in Atlassian Confluence Server before version 6.3.4 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability through the description of a macro.

01What is this vulnerability?

The usermacros resource in Atlassian Confluence Server before version 6.3.4 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability through the description of a macro.

02Affected products

Vendor	Product	Versions
Atlassian	Confluence	prior to 6.3.4

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-02-02T14:00:00.000Z
• Last modified: 2024-09-16T20:28:09.477Z

09References

• jira.atlassian.com — https://jira.atlassian.com/browse/CONFSERVER-54904
• www.securityfocus.com — http://www.securityfocus.com/bid/103064