What is CVE-2020-17952?

CVE-2020-17952 is a critical-severity vulnerability in Twothink Project. CVSS score: 9.8/10. Published 2021-07-26.

How severe is CVE-2020-17952?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Twothink Project

CVE-2020-17952

A remote code execution (RCE) vulnerability in /library/think/App.php of Twothink v2.0 allows attackers to execute arbitrary PHP code.

Published 2021-07-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.025 (84.0th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Twothink Project — versions 2.0

References

github.com/twothink/twothink/issues/1 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-17952?: CVE-2020-17952 is a critical-severity vulnerability in Twothink Project. CVSS score: 9.8/10. Published 2021-07-26.
How severe is CVE-2020-17952?: Critical severity. CVSS v3 base score is 9.8 out of 10.