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TI-2026-29100 Aliases CVE-2026-40323GHSA-63x8-x938-vx33

SP1 V6 Recursion Circuit Row-Count Binding Gap

Priority LOW 38CWE-345Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-345.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00195 9th percentileScored 2026-11-07
Fix Fixed sp1 (succinctlabs): 6.1.0sp1_sdk (crates.io): 6.1.0+2 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
succinctlabssp16.0.0 to before 6.1.06.1.0Patch availableCNA
—sp1_sdk (crates.io)6.0.0 to before 6.1.06.1.0Patch availableGHSA-63x8-x938-vx33
—sp1_recursion_circuit (crates.io)6.0.0 to before 6.1.06.1.0Patch availableGHSA-63x8-x938-vx33
—sp1_prover (crates.io)6.0.0 to before 6.1.06.1.0Patch availableGHSA-63x8-x938-vx33
  • sp1 Vendorsuccinctlabs Affected 6.0.0 to before 6.1.0 Fixed in 6.1.0 Patch available CNA
  • sp1_sdk (crates.io) Vendor— Affected 6.0.0 to before 6.1.0 Fixed in 6.1.0 Patch available GHSA-63x8-x938-vx33
  • sp1_recursion_circuit (crates.io) Vendor— Affected 6.0.0 to before 6.1.0 Fixed in 6.1.0 Patch available GHSA-63x8-x938-vx33
  • sp1_prover (crates.io) Vendor— Affected 6.0.0 to before 6.1.0 Fixed in 6.1.0 Patch available GHSA-63x8-x938-vx33

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:succinct:sp1:*:*:*:*:*:*:*:*6.0.0 to before 6.1.0VulnerableSuccinct
  • cpe:2.3:a:succinct:sp1:*:*:*:*:*:*:*:* Versions 6.0.0 to before 6.1.0 Vulnerable ·Succinct

Remediation

  • Fix · CNA sp1 (succinctlabs) Fixed in 6.1.0
  • Fix · GHSA-63x8-x938-vx33 sp1_sdk (crates.io) Fixed in 6.1.0 Advisory →
  • Fix · GHSA-63x8-x938-vx33 sp1_recursion_circuit (crates.io) Fixed in 6.1.0 Advisory →
  • Fix · GHSA-63x8-x938-vx33 sp1_prover (crates.io) Fixed in 6.1.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40323
  2. 2026-10-03 Alias added: GHSA-63x8-x938-vx33

References

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences