V programming language standard library net.http through version 0.5.2 prior to commit 4077484 contains a TLS
Source GCVE Database
Not known to be exploited · CVSS 9.1 Critical.
Data as of 10 Nov 2026, 16:37 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 9.1 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 7.4 |
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 10 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| vlang | Affected
| Fixed in– |
GitHubvlang/vpkg:github/vlang/vOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should explicitly configure SSLConnectConfig.validate and FetchConfig.validate to true to enforce certificate validation and prevent TLS handshake completion with invalid certificates. Monitor the vendor's repository or advisory for any official fixes or updates.
Description
The V programming language standard library net.http up to version 0.5.2 contains a TLS certificate validation bypass vulnerability. This flaw arises because the default configuration for SSLConnectConfig.validate and FetchConfig.validate is false, causing TLS handshakes to complete without verifying certificates in both mbedtls and OpenSSL backends. As a result, attackers can intercept or modify HTTPS traffic by presenting invalid certificates such as expired, self-signed, wrong-hostname, or untrusted-root certificates unless the validate option is explicitly set to true.
References
- github.com/vlang/v/security/advisories/GHSA-7g66-88pm-6gv6 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-82509 (opens in a new tab)
- github.com/vlang/v/commit/40774847a949722f5d090706c050b806ceeacfd1 (opens in a new tab)
- vulncheck.com/advisories/v-programming-language-net-http-tls-certificate-validation-bypass (opens in a new tab)