What is CVE-2017-9505?

CVE-2017-9505 is a medium-severity vulnerability in Atlassian Confluence, classified under Incorrect Default Permissions. CVSS score: 4.3/10. Published 2017-06-15.

How severe is CVE-2017-9505?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Atlassian Confluence

CVE-2017-9505

Atlassian Confluence starting with 4.3.0 before 6.2.1 did not check if a user had permission to view a page when creating a workbox notification about new comments. An attacker who can login to Confluence could receive workbox notifications, which contain the content of comments, for comments added to a page after they started watching it even if they do not have permission to view the page itself.

Published 2017-06-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.2th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Atlassian Confluence
Atlassian Confluence Server — versions Versions of Confluence starting with 4.3.0 before 6.2.1 are affected by this vulnerability.

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

www.securityfocus.com/bid/99086 (VDB Entry, Third Party Advisory, vdb-entry)
jira.atlassian.com/browse/CONFSERVER-52560 (Mitigation, Vendor Advisory)
www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20170613-0_Atlas… (Exploit, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2017-9505?: CVE-2017-9505 is a medium-severity vulnerability in Atlassian Confluence, classified under Incorrect Default Permissions. CVSS score: 4.3/10. Published 2017-06-15.
How severe is CVE-2017-9505?: Medium severity. CVSS v3 base score is 4.3 out of 10.