Rubedo - Directory Traversal (CVE-2018-16836)
514Exploiting IPs reported
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.
CrowdSec analysis
CVE-2018-16836 is a critical directory traversal vulnerability in Rubedo that allows unauthenticated attackers to access and potentially execute files outside the intended service root path through crafted requests.
CrowdSec has been tracking this vulnerability and its exploits since 2nd of April 2025.
Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2018-16836 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning. In addition, according to the CrowdSec network, attack volume against CVE-2018-16836 has dipped slightly compared to the previous week. Although still commonly targeted, the decline suggests a cooling-off period. Long-term relevance remains, but attention is waning.
Attackers are focusing on URLs containing /theme/default/img/ with directory traversal patterns to exploit this issue.
Exploitation
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Common Weakness Enumeration (CWE)
Protection
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Blocklist
With our advanced worldwide network detection, CrowdSec can provide a list of IPs known for exploiting the vulnerability.
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