CVE-2018-16836
CriticalExploitedPublic exploitRubedo through 3.4.0 contains a Directory Traversal vulnerability in the theme component, allowing unauthenticated attackers to read and execute arbitrary files outside of the service root path, as demonstrated by a /theme/default/img/%2e%2e/..//etc/passwd URI.
Published Sep 11, 2018 · Updated Jul 8, 2026
Key Facts
Patch immediately- CVE-2018-16836 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Rubedo (Rubedo Project).
- It is exploited in the wild, listed in Industry KEV feed since Jun 7, 2025. Public exploit code is available.
- EPSS estimates a 61% probability of exploitation in the next 30 days.
- Fixed versions are available, including Rubedo <=3.4.0, Rubedo 3.4.0.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
61%
Higher than 99.1% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
Rubedo through 3.4.0 contains a Directory Traversal vulnerability in the theme component, allowing unauthenticated attackers to read and execute arbitrary files outside of the service root path, as demonstrated by a /theme/default/img/%2e%2e/..//etc/passwd URI.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jun 7, 2025 | 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
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| RubedoRubedo Project | See advisory | 3.4.0 |
Patched Releases
Rubedo
<=3.4.0
Timeline
Publicly disclosed
Sep 11, 2018
Added to Industry KEV feed
Jun 7, 2025
Last updated
Jul 8, 2026
Weakness Type
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
- exploitVulnCheck exploitation report
- exploithttps://github.com/maroueneboubakri/CVE/tree/master/rubedo-cms
- exploitExploitDB-45385
- exploit45385
FAQ
Common Questions.
Rubedo through 3.4.0 contains a Directory Traversal vulnerability in the theme component, allowing unauthenticated attackers to read and execute arbitrary files outside of the service root path, as demonstrated by a /theme/default/img/%2e%2e/..//etc/passwd URI.
Affected: Rubedo (Rubedo Project). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jun 7, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Rubedo <=3.4.0, Rubedo 3.4.0.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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