{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-09T03:50:51.218","vulnerabilities":[{"cve":{"id":"CVE-2026-24904","sourceIdentifier":"security-advisories@github.com","published":"2026-01-29T22:15:55.047","lastModified":"2026-02-20T20:58:09.620","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"TrustTunnel is an open-source VPN protocol with a rule bypass issue in versions prior to 0.9.115. In `tls_listener.rs`, `TlsListener::listen()` peeks 1024 bytes and calls `extract_client_random(...)`. If `parse_tls_plaintext` fails (for example, a fragmented/partial ClientHello split across TCP writes), `extract_client_random` returns `None`. In `rules.rs`, `RulesEngine::evaluate` only evaluates `client_random_prefix` when `client_random` is `Some(...)`. As a result, when extraction fails (`client_random == None`), any rule that relies on `client_random_prefix` matching is skipped and evaluation falls through to later rules. As an important semantics note: `client_random_prefix` is a match condition only. It does not mean \"block non-matching prefixes\" by itself. A rule with `client_random_prefix = ...` triggers its `action` only when the prefix matches (and the field is available to evaluate). Non-matches (or `None`) simply do not match that rule and continue to fall through. The vulnerability is fixed in version 0.9.115."},{"lang":"es","value":"TrustTunnel es un protocolo VPN de código abierto con un problema de omisión de reglas en versiones anteriores a la 0.9.115. En `tls_listener.rs`, `TlsListener::listen()` examina 1024 bytes y llama a `extract_client_random(...)`. Si `parse_tls_plaintext` falla (por ejemplo, un ClientHello fragmentado/parcial dividido en varias escrituras TCP), `extract_client_random` devuelve `None`. En `rules.rs`, `RulesEngine::evaluate` solo evalúa `client_random_prefix` cuando `client_random` es `Some(...)`. Como resultado, cuando la extracción falla (`client_random == None`), cualquier regla que dependa de la coincidencia de `client_random_prefix` se omite y la evaluación pasa a reglas posteriores. Como una nota semántica importante: `client_random_prefix` es solo una condición de coincidencia. No significa 'bloquear prefijos no coincidentes' por sí mismo. Una regla con `client_random_prefix = ...` activa su `acción` solo cuando el prefijo coincide (y el campo está disponible para evaluar). Las no-coincidencias (o `None`) simplemente no coinciden con esa regla y continúan pasando. La vulnerabilidad está corregida en la versión 0.9.115."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-284"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:adguard:trusttunnel:*:*:*:*:*:*:*:*","versionEndExcluding":"0.9.115","matchCriteriaId":"08F7E28C-244F-4FAE-9EDF-127191A1FED8"}]}]}],"references":[{"url":"https://github.com/TrustTunnel/TrustTunnel/commit/aa5060145506952b9431b0ed3edb52bb6c08d9a6","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/TrustTunnel/TrustTunnel/security/advisories/GHSA-fqh7-r5gf-3r87","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory","Patch"]}]}}]}