CVE-2026-64623 | Network-AI before 5.13.4 contains an improper cryptographic … | CVSS 8.6 HIGH

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.

Metadata

CVE ID: CVE-2026-64623
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-07-20 11:58 UTC
Published: 2026-07-20 12:04 UTC
Last updated: 2026-07-20 13:49 UTC
Primary CWE: CWE-347
Improper Verification of Cryptographic Signature
Vendor / Product: Jovancoding / Network-AI
Sources: cve.org · NVD

Severity & Metrics

8.6 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
Jovancoding	Network-AI	—	0 < 5.13.4, 5.13.4

Weakness (CWE)

CWE	Source	Description
CWE-347	cna	Improper Verification of Cryptographic Signature

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.8	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
8.6	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

References (2)

GitHub Security Advisory (GHSA-3jf7-33vc-hgf4) https://github.com/Jovancoding/Network-AI/security/advisories/GHSA-3jf7-33vc-hgf4
VulnCheck Advisory: Network-AI before 5.13.4 Cryptographic Signature Verification Bypass https://www.vulncheck.com/advisories/network-ai-before-cryptographic-signature-verification-bypass