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CVE-2016-6668

20
FAUCET Score

CVE-2016-6668 describes a vulnerability in Atlassian's Hipchat Integration Plugin for Bitbucket Server, Confluence HipChat plugin, and HipChat for JIRA plugin, allowing remote attackers to extract the secret key used for HipChat communication. This vulnerability is rated High severity (CVSS 7.5) due to its network-based attack vector, low complexity, and potential for high confidentiality impact without requiring user interaction. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.5.0CPE matchmatch criteria
cpe:2.3:a:atlassian:confluence_server:5.5.0:*:*:*:*:*:*:*
5.9.1CPE matchmatch criteria
cpe:2.3:a:atlassian:confluence_server:5.9.1:*:*:*:*:*:*:*
5.9.2CPE matchmatch criteria
cpe:2.3:a:atlassian:confluence_server:5.9.2:*:*:*:*:*:*:*
5.9.3CPE matchmatch criteria
cpe:2.3:a:atlassian:confluence_server:5.9.3:*:*:*:*:*:*:*
5.9.4CPE matchmatch criteria
cpe:2.3:a:atlassian:confluence_server:5.9.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.74%
Probability of exploitation in next 30 days
EPSS Percentile
88.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0374 is in the 80th percentile among its peer group of 51,455 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/139004/Atlassian-HipChat-Secret-Key-Disclosure.html
Third Party AdvisoryVDB Entry
confluence.atlassian.com / bitbucketserver/bitbucket-server-security-advisory-2016-09-21-840698321.html
Vendor Advisory
confluence.atlassian.com / doc/confluence-security-advisory-2016-09-21-849052104.html
Vendor Advisory
confluence.atlassian.com / jira/jira-and-hipchat-for-jira-plugin-security-advisory-2016-09-21-849052099.html
Vendor Advisory
securityfocus.com / archive/1/539530/100/0/threaded
Broken LinkThird Party AdvisoryVDB Entry
securityfocus.com / bid/93159
Broken LinkThird Party AdvisoryVDB Entry