Vulnerability in Gitleaks
CVE-2026-63728
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (10.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Gitleaks — versions 0
Weakness classification (CWE)
References
- Product (product)
- Patch Commit (patch)
- Blog Post
- www.vulncheck.com/advisories/gitleaks-secret-exfiltration-via-non-hermetic-spri… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-63728?
- CVE-2026-63728 is a medium-severity vulnerability in Gitleaks, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 6.3/10. Published 2026-07-21.
- How severe is CVE-2026-63728?
- Medium severity. CVSS v3 base score is 6.3 out of 10.