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CVE-2017-18389

21
FAUCET Score

CVE-2017-18389 describes a string format injection vulnerability in the dovecot-xaps-plugin of cPanel versions prior to 68.0.15. This medium-severity flaw (CVSS 6.3) allows an authenticated attacker to achieve low impact on confidentiality, integrity, and availability over the network with low attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 63.9999.74, < 64.0.42CPE matchmatch criteria
cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*
>= 65.9999.38, < 66.0.34CPE matchmatch criteria
cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*
>= 67.9999.64, < 68.0.15CPE matchmatch criteria
cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0071 is in the 60th percentile among its peer group of 21,977 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

documentation.cpanel.net / display/CL/68+Change+Log
ProductRelease Notes
news.cpanel.com / cpanel-tsr-2017-0006-full-disclosure
Vendor Advisory