What is CVE-2018-18655?

CVE-2018-18655 is a medium-severity vulnerability in Prayer Project, classified under Information Disclosure. CVSS score: 4.3/10. Published 2018-10-26.

How severe is CVE-2018-18655?

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

Information disclosure in Prayer Project

CVE-2018-18655

Prayer through 1.3.5 sends a Referer header, containing a user's username, when a user clicks on a link in their email because header.t lacks a no-referrer setting.

Vulnerability class: Information Disclosure

Published 2018-10-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Prayer Project

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

telescoper.wordpress.com/2018/10/18/a-breakthrough-for-a-bigot/ (Not Applicable)
bugs.debian.org/911842 (Patch, Mailing List, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-18655?: CVE-2018-18655 is a medium-severity vulnerability in Prayer Project, classified under Information Disclosure. CVSS score: 4.3/10. Published 2018-10-26.
How severe is CVE-2018-18655?: Medium severity. CVSS v3 base score is 4.3 out of 10.