CVE•Published 2026-04-18•Modified 2026-05-13•0 articles on news•5 live references•NVD data

CVE-2026-40323Succinct · Sp1

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 98% of all CVEs

Weaknesses (CWE)

CWE-345Insufficient Verification of Data Authenticity CWE-354Improper Validation of Integrity Check Value

Description

SP1 is a zero‑knowledge virtual machine that proves the correct execution of programs compiled for the RISC-V architecture. In versions 6.0.0 through 6.0.2, a soundness vulnerability in the SP1 V6 recursive shard verifier allows a malicious prover to construct a recursive proof from a shard proof that the native verifier would reject. Version 6.1.0 fixes the issue.

Timeline

Published 2026-04-18

Modified 2026-05-13

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-40323

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Succinct Sp1"

All exposed Succinct Sp1 instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Sp1"

HTTP body or banner mentions "Sp1" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-40323