EUVD-2026-46134
GHSA-mmh4-9cvr-w4cj
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local template rendering requires a victim to run Gitleaks (UI:R, AV:L); attacker needs no privileges since they only supply the template (PR:N); reading host env and exfiltrating beyond the tool is scope-changed confidentiality-only (S:C, C:H, I:N, A:N).
AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
Gitleaks prior to 8.30.1 contains a template injection vulnerability that allows attackers who can supply or influence report templates to read arbitrary environment variables and exfiltrate sensitive data by leveraging non-hermetic Sprig template functions. Attackers can craft malicious report templates using the env, expandenv, and getHostByName functions to extract credentials, tokens, and API keys from the host process and exfiltrate them through DNS queries, including secrets discovered during the scan itself.
AnalysisAI
Sensitive data exfiltration in Gitleaks before 8.30.1 lets an attacker who controls the report template read arbitrary host environment variables through non-hermetic Sprig functions (env, expandenv, getHostByName) and smuggle them out via attacker-triggered DNS lookups. Because Gitleaks runs in CI/CD with broad access to credentials, tokens, and API keys - including the very secrets it just discovered during a scan - a malicious template turns the scanner into an exfiltration channel. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that Gitleaks be run with the report template (custom output template) feature using a template the attacker can supply or influence, and that the template invoke the non-hermetic Sprig functions env, expandenv, or getHostByName - this specific feature and function usage IS the condition. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N, base 8.1) frames this accurately: exploitation is local and requires active user interaction (a victim must run Gitleaks with the attacker-influenced template), but confidentiality impact is high on both the vulnerable system (VC:H) and a subsequent system (SC:H, reflecting exfiltration of scanned/host secrets), with no integrity or availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker submits a pull request to a repository that adds or modifies a Gitleaks report template containing Sprig calls like getHostByName combined with env/expandenv. When the CI/CD pipeline runs Gitleaks on the branch, the template renders inside the runner, reads CI secrets and any secrets found during the scan, and encodes them into DNS queries to an attacker-controlled domain, silently exfiltrating them; a public write-up demonstrates this technique. |
| Remediation | Upgrade to Gitleaks 8.30.1 or later, which restricts the template engine so non-hermetic Sprig functions can no longer reach host environment variables or perform DNS resolution (Vendor-released patch: 8.30.1; fix in commit 83d9cd684c87d95d656c1458ef04895a7f1cbd8e). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Gitleaks deployments and verify current versions. …
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Same technique Information Disclosure
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SUSE
Severity: ModerateShare
External POC / Exploit Code
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