What is CVE-2023-5866?

CVE-2023-5866 is a medium-severity vulnerability in Phpmyfaq, classified under Sensitive Cookie in HTTPS Session Without 'Secure' Attribute. CVSS score: 5.7/10. Published 2023-10-31.

How severe is CVE-2023-5866?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Vulnerability in Phpmyfaq

CVE-2023-5866

Sensitive Cookie in HTTPS Session Without 'Secure' Attribute in GitHub repository thorsten/phpmyfaq prior to 3.2.1.

Published 2023-10-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Phpmyfaq
Thorsten Thorsten/phpmyfaq — versions unspecified

Weakness classification (CWE)

CWE-614 — Sensitive Cookie in HTTPS Session Without 'Secure' Attribute

References

huntr.com/bounties/ec44bcba-ae7f-497a-851e-8165ecf56945 (Exploit, Patch, Third Party Advisory)
github.com/thorsten/phpmyfaq/commit/fdacff14acd5e69841068f0e32b59e2d1b1d0d55 (Patch)

Frequently asked questions

What is CVE-2023-5866?: CVE-2023-5866 is a medium-severity vulnerability in Phpmyfaq, classified under Sensitive Cookie in HTTPS Session Without 'Secure' Attribute. CVSS score: 5.7/10. Published 2023-10-31.
How severe is CVE-2023-5866?: Medium severity. CVSS v3 base score is 5.7 out of 10.