What is CVE-2023-40600?

CVE-2023-40600 is a medium-severity vulnerability in Ewww Image Optimizer, classified under Information Disclosure. CVSS score: 5.3/10. Published 2023-11-30.

How severe is CVE-2023-40600?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2023-40600 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Ewww Image Optimizer

CVE-2023-40600

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Exactly WWW EWWW Image Optimizer. It works only when debug.log is turned on.This issue affects EWWW Image Optimizer: from n/a through 7.2.0.

Vulnerability class: Information Disclosure

Published 2023-11-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.020 (80.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: -0.000

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

References

patchstack.com/database/vulnerability/ewww-image-optimizer/wordpress-ewww-image… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-40600?: CVE-2023-40600 is a medium-severity vulnerability in Ewww Image Optimizer, classified under Information Disclosure. CVSS score: 5.3/10. Published 2023-11-30.
How severe is CVE-2023-40600?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-40600 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.