Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From version 3.0.0 to before version 3.8.0, a vulnerability in Nuclei's expression evaluation engine makes it possible for a malicious target server to inject and execute supported DSL expressions. This happens when HTTP response data containing helper/function syntax gets reused by multi-step templates.
If the -env-vars / -ev option is explicitly enabled, this can expose host environment variables. That option is off by default, so standard configurations are not affected by the information disclosure risk. This issue has been patched in version 3.8.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Projectdiscovery Nuclei
cpe:2.3:a:projectdiscovery:nuclei:*:*:*:*:*:go:*:*
|
3.0.0
|
3.8.0
|
References 6
https://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493…
security-advisories@github.com
https://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dd…
security-advisories@github.com
https://github.com/projectdiscovery/nuclei/pull/7221
security-advisories@github.com
https://github.com/projectdiscovery/nuclei/pull/7321
security-advisories@github.com
https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0
security-advisories@github.com
https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-q…
security-advisories@github.com