What is CVE-2021-40553?

CVE-2021-40553 is a high-severity vulnerability in Piwigo, classified under Code Injection. CVSS score: 8.8/10. Published 2022-06-28.

How severe is CVE-2021-40553?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Piwigo

CVE-2021-40553

piwigo 11.5.0 is affected by a remote code execution (RCE) vulnerability in the LocalFiles Editor.

Vulnerability class: RCE (Remote Code Execution)

Published 2022-06-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.023 (82.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: +0.001

Affected products

Piwigo — versions 11.5.0

Weakness classification (CWE)

CWE-94 — Code Injection

References

github.com/Yang9999999/vuln/blob/main/README.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-40553?: CVE-2021-40553 is a high-severity vulnerability in Piwigo, classified under Code Injection. CVSS score: 8.8/10. Published 2022-06-28.
How severe is CVE-2021-40553?: High severity. CVSS v3 base score is 8.8 out of 10.