CVE-2026-40323 | succinctlabs sp1 up to 6.0.x data authenticity (GHSA-63x8-x938-vx33)

VDB-358171 · CVE-2026-40323 · GHSA-63X8-X938-VX33 SUCCINCTLABS SP1 UP TO 6.0.X DATA AUTHENTICITY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.6 $0-$5k 0.00+ Summaryinfo A vulnerability identified as problematic has been detected in succinctlabs sp1 up to 6.0.x. Affected by this vulnerability is an unknown functionality. This manipulation causes data authenticity. This vulnerability is handled as CVE-2026-40323. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component. Detailsinfo A vulnerability was found in succinctlabs sp1 up to 6.0.x. It has been declared as problematic. Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a data authenticity vulnerability. The CWE definition for the vulnerability is CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. As an impact it is known to affect integrity. The summary by CVE is: 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. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-40323 since 04/10/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. Upgrading to version 6.1.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Productinfo Vendor succinctlabs Name sp1 Version 6.0 Website Product: https://github.com/succinctlabs/sp1/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 3.7 VulDB Meta Temp Score: 3.6 VulDB Base Score: 3.7 VulDB Temp Score: 3.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Data authenticity CWE: CWE-345 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: sp1 6.1.0 Timelineinfo 04/10/2026 CVE reserved 04/18/2026 +8 days Advisory disclosed 04/18/2026 +0 days VulDB entry created 04/18/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-63x8-x938-vx33 Status: Confirmed CVE: CVE-2026-40323 (🔒) GCVE (CVE): GCVE-0-2026-40323 GCVE (VulDB): GCVE-100-358171 Entryinfo Created: 04/18/2026 09:16 Changes: 04/18/2026 09:16 (67) Complete: 🔍 Cache ID: 99:87F:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸