CVE-2019-15006
There was a man-in-the-middle (MITM) vulnerability present in the Confluence Previews plugin in Confluence Server and Confluence Data Center.
Does this matter?
Lower severity and a low EPSS score (1.91%). Track it; it rarely justifies an emergency change on its own.
Description
There was a man-in-the-middle (MITM) vulnerability present in the Confluence Previews plugin in Confluence Server and Confluence Data Center. This plugin was used to facilitate communication with the Atlassian Companion application. The Confluence Previews plugin in Confluence Server and Confluence Data Center communicated with the Companion application via the atlassian-domain-for-localhost-connections-only.com domain name, the DNS A record of which points at 127.0.0.1. Additionally, a signed certificate for the domain was publicly distributed with the Companion application. An attacker in the position to control DNS resolution of their victim could carry out a man-in-the-middle (MITM) attack between Confluence Server (or Confluence Data Center) and the atlassian-domain-for-localhost-connections-only.com domain intended to be used with the Companion application. This certificate has been revoked, however, usage of the atlassian-domain-for-localhost-connections-only.com domain name was still present in Confluence Server and Confluence Data Center. An attacker could perform the described attack by denying their victim access to certificate revocation information, and carry out a man-in-the-middle (MITM) attack to observe files being edited using the Companion application and/or modify them, and access some limited user information.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
- EPSS
- 1.91% probability · 80th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-913
- Affected
- atlassian/confluence · atlassian/confluence server
- Source
- security@atlassian.com
EPSS 1.9% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://packetstormsecurity.com/files/155742/Atlassian-Confluence-Man-In-The-Middle.htmlThird Party Advisory, VDB Entry
- https://confluence.atlassian.com/doc/confluence-security-advisory-2019-12-18-982324349.htmlPatch, Vendor Advisory
- https://jira.atlassian.com/browse/CONFSERVER-59244Patch, Vendor Advisory
- https://seclists.org/bugtraq/2019/Dec/36Mailing List, Third Party Advisory
- https://twitter.com/SwiftOnSecurity/status/1202034106495832067Issue Tracking, Third Party Advisory
- http://packetstormsecurity.com/files/155742/Atlassian-Confluence-Man-In-The-Middle.htmlThird Party Advisory, VDB Entry
- https://confluence.atlassian.com/doc/confluence-security-advisory-2019-12-18-982324349.htmlPatch, Vendor Advisory
- https://jira.atlassian.com/browse/CONFSERVER-59244Patch, Vendor Advisory
- https://seclists.org/bugtraq/2019/Dec/36Mailing List, Third Party Advisory
- https://twitter.com/SwiftOnSecurity/status/1202034106495832067Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.