VDB
CVE-2026-67201
CVE-2026-67201
PUBLISHED
CVSS 7.7 HIGH
Reported by VulnCheck · Published July 29, 2026
V through 0.5.2, fixed in commit 85859f0, contains a server-side request forgery (SSRF) bypass vulnerability that allows attackers to circumvent host-based allowlists by exploiting a parser differential between net.urllib and net.http. Attackers can craft a URL containing a backslash in the authority section such that net.urllib.parse() extracts the trusted host for allowlist validation while net.http.get() normalizes the backslash and connects to the internal host, enabling access to internal network services that the allowlist was intended to block.
Risk Scores
CVSS 4.0
7.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| vlang | v | 0, 85859f0f3498d4091b38009c45ed390a97eeedc2 |
| vlang | v | 0, 85859f0f3498d4091b38009c45ed390a97eeedc2 |
Timeline
- Jul 29, 2026 Coalition ESS Score
- Jul 29, 2026 CVE Published
- Jul 30, 2026 CVE Updated
- Aug 7, 2026 EPSS Score
References
- Researcher Disclosure technical-descriptionexploit
- Pull Request issue-tracking
- Patch Commit patch
- third-party-advisory