HOMEVULNERABILITIESCVE-2026-41645
MEDIUM

CVE-2026-41645

CWE-94Published: May 8, 2026· Updated: May 8, 2026

5.3
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:11.4th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-41645 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.3.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected Vendors & Products

projectdiscovery1 product
nuclei
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0eb
PATCHhttps://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3
PATCHhttps://github.com/projectdiscovery/nuclei/pull/7221
PATCHhttps://github.com/projectdiscovery/nuclei/pull/7321
PATCHhttps://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvr

All References (6)

→
https://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0ebPatch
→
https://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3Patch
→
https://github.com/projectdiscovery/nuclei/pull/7221Issue Tracking · Patch
→
https://github.com/projectdiscovery/nuclei/pull/7321Issue Tracking · Patch
→
https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0Product · Release Notes
→
https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvrMitigation · Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2026-41645
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-94
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMay 8, 2026

Related CVEs (CWE-94)

CVE-2026-48836
10.0
CVE-2026-52704
10.0
CVE-2026-43898
10.0
CVE-2026-43997
10.0
CVE-2026-10561
10.0
CVE-2026-25470
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-41645 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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