CVE-2026-76805

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Source
https://cve.org/CVERecord?id=CVE-2026-76805
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76805.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-76805
Aliases
Published
2026-09-22T16:48:49Z
Modified
2026-09-24T03:45:47Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Nuclei: Environment Variable Disclosure via Response-Derived Data in DAST/Fuzz Mode
Details

Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From 3.0.0 until 3.10.0, the DAST/fuzz payload path in pkg/fuzz/parts.go can evaluate substituted runtime data more than once, creating a second evaluation pass that allows response content captured by an internal: true extractor in one protocol step to be reinterpreted as template syntax in a later fuzz step. This vulnerability is an incomplete fix for CVE-2026-41645: the prior remediation made expressions.Evaluate() single-pass within one call but did not prevent DAST/fuzz callers from evaluating substituted output again. When -env-vars is enabled, a malicious scan target can return marker-shaped content that resolves against the template variable map and discloses scanner-host environment variables such as credentials, API keys, or tokens. The vulnerability requires a multi-step DAST or fuzz template, response data reused through an internal extractor, and explicit environment-variable expansion; users who do not enable -env-vars are not affected by the sensitive-information disclosure. This issue is fixed in version 3.10.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-200"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76805.json"
}
References

Affected packages

Git / github.com/projectdiscovery/nuclei

Affected ranges

Type
GIT
Repo
https://github.com/projectdiscovery/nuclei
Events
Introduced
990cec0de154bd3955e0c1e19951f90e06f6ea7c
Fixed
ccbfb12bd01447ba25f6e755dfb2bee677736da6
Fixed
f9cf234c12a333656751e04493dc4b1f4f5f3e88
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "3.0.0"
        },
        {
            "fixed":  "3.10.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v3.*
v3.0.0
v3.0.1
v3.0.2
v3.0.3
v3.0.4
v3.1.0
v3.1.1
v3.1.10
v3.1.2
v3.1.3
v3.1.4
v3.1.5
v3.1.6
v3.1.7
v3.1.8
v3.1.9
v3.2.0
v3.2.1
v3.2.2
v3.2.3
v3.2.4
v3.2.5
v3.2.6
v3.2.7
v3.2.8
v3.2.9
v3.3.0
v3.3.1
v3.3.10
v3.3.2
v3.3.3
v3.3.4
v3.3.5
v3.3.6
v3.3.7
v3.3.8
v3.3.9
v3.4.0
v3.4.1
v3.4.10
v3.4.2
v3.4.3
v3.4.4
v3.4.5
v3.4.6
v3.4.7
v3.4.8
v3.4.9
v3.5.0
v3.5.1
v3.6.0
v3.6.1
v3.6.2
v3.7.0
v3.7.1
v3.8.0
v3.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76805.json"