CVE-2023-40600
HighExploitedEWWW Image Optimizer <= 7.2.0 - Unauthenticated Sensitive Information Exposure via Debug Log
Published Nov 13, 2023 · Updated Oct 8, 2026 · Also known as d20ff1a8-8794-41e1-9e66-1cda90f9ff77
Key Facts
Patch immediately- CVE-2023-40600 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Image Optimizer (Ewww), ewww-image-optimizer (wordpress-plugin).
- It is exploited in the wild, listed in Industry KEV feed since Mar 31, 2026. No public exploit code is known.
- EPSS estimates a 2.0% probability of exploitation in the next 30 days.
- Fixed versions are available, including ewww-image-optimizer 7.2.1, Image Optimizer 7.2.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
2.0%
Higher than 80.6% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
None known
Get the full CVE-2023-40600 brief as a PDF
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Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Mar 31, 2026 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Image OptimizerEwww | See advisory | 7.2.1 |
| ewww-image-optimizerwordpress-plugin | >= n/a | 7.2.1 |
Patched Releases
ewww-image-optimizer
7.2.1
Timeline
Publicly disclosed
Nov 13, 2023
Added to Industry KEV feed
Mar 31, 2026
Last updated
Oct 8, 2026
Weakness Type
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40600.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2023-40600
- advisoryhttps://patchstack.com/database/vulnerability/ewww-image-optimizer/wordpress-ewww-image-optimizer-plugin-7-2-0-sensitive-data-exposure-vulnerability?_s_id=cve
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/d20ff1a8-8794-41e1-9e66-1cda90f9ff77?source=api-prod
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/d20ff1a8-8794-41e1-9e66-1cda90f9ff77?source=api-scan
FAQ
Common Questions.
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Exactly WWW EWWW Image Optimizer.
Affected: Image Optimizer (Ewww); ewww-image-optimizer (wordpress-plugin) versions >= n/a. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Mar 31, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including ewww-image-optimizer 7.2.1, Image Optimizer 7.2.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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