Vulnerability · Published Jul 20, 2026 · Assigned by VulnCheck

CVE-2026-64623Network-AI before 5.13.4 Cryptographic Signature Verification Bypass

High 8.6

In plain English

A high-severity security flaw in Network-AI from Jovancoding. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 3.1)8.6High

Exploit odds (30 days)0.3%top 82.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Network-AI before 5.13.4 contains an improper cryptographic signature verification vulnerability in APSAdapter where the default local verifier accepts any non-empty string as valid. Unauthenticated attackers can submit forged APS delegation payloads with arbitrary scopes to bypass signature verification and obtain signed permission-grant tokens for sensitive resources including SHELL_EXEC.

Affected products (as reported)

Vendor	Product	Versions
Jovancoding	Network-AI	0 – before 5.13.4

Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

References

GitHub Security Advisory (GHSA-3jf7-33vc-hgf4) vendor-advisory
VulnCheck Advisory: Network-AI before 5.13.4 Cryptographic Signature Verification Bypass third-party-advisory