What is CVE-2020-23766?

CVE-2020-23766 is a medium-severity vulnerability in Htmly, classified under Path Traversal. CVSS score: 6.5/10. Published 2021-05-21.

How severe is CVE-2020-23766?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in Htmly

CVE-2020-23766

An arbitrary file deletion vulnerability was discovered on htmly v2.7.5 which allows remote attackers to use any absolute path to delete any file in the server should they gain Administrator privileges.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-05-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (72.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Htmly — versions 2.7.5

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/danpros/htmly/issues/412 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-23766?: CVE-2020-23766 is a medium-severity vulnerability in Htmly, classified under Path Traversal. CVSS score: 6.5/10. Published 2021-05-21.
How severe is CVE-2020-23766?: Medium severity. CVSS v3 base score is 6.5 out of 10.