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CVE-2026-41645
5.3 MEDIUM
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): None (N)
- User Interaction (UI): Required (R)
- Scope (S): Unchanged (U)
- Confidentiality (C): High (H)
- Integrity (I): None (N)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): Required (R)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): None (N)
Activity log
- Created suggestion
Nuclei: Environment variable disclosure via Response-Derived DSL Expressions
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.
References
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https://github.com/projectdiscovery/nuclei/pull/7221 x_refsource_MISC
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https://github.com/projectdiscovery/nuclei/pull/7321 x_refsource_MISC
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https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0 x_refsource_MISC
Affected products
nuclei
- ==>= 3.0.0, < 3.8.0
Matching in nixpkgs
pkgs.nuclei
Tool for configurable targeted scanning
pkgs.nucleiparser
Nuclei output parser for CLI
Package maintainers
-
@Misaka13514 Rine Amakawa <Misaka13514@gmail.com>
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@fabaff Fabian Affolter <mail@fabian-affolter.ch>