CVE-2026-64623

Network-AI before 5.13.4 Cryptographic Signature Verification Bypass

8.8 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: High
Availability: Low

Exploit likelihood

0.26%Up 0.1 points since Jul 21, 2026

What each source reports

CVE List Score used 8.8

Network-AI before 5.13.4 Cryptographic Signature Verification Bypass

Record: CVE-2026-64623
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Weakness: CWE-347
Updated: 2026-11-02

EUVDEUVD-2026-45938 8.8

Record: EUVD-2026-45938
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-37v5-gpcx-w9fc 8.8

Network-AI before 5.13.4 contains an improper cryptographic signature verification vulnerability...

Record: GHSA-37v5-gpcx-w9fc
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Weakness: CWE-347
Updated: 2026-11-02

NVD 8.8

Record: CVE-2026-64623
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Weakness: CWE-347
Updated: 2026-11-02

OSV 8.8

Network-AI before 5.13.4 Cryptographic Signature Verification Bypass

Record: CVE-2026-64623
CVSS 4.0: 8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
Weakness: CWE-347
Updated: 2026-11-02

Affected products

jovancoding network-ai

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-64623 is a high vulnerability (CVSS 8.8) in Jovancoding Network-ai, published July 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. No source names a fixed version.