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Security incident · RUSTSEC-2026-0334

BIP-322 address ownership verification bypass for P2WPKH and P2SH-P2WPKH addresses

Published Aug 14, 2026 · RustSec Rust · evidence confidence high

Affected versions of accepted a BIP-322 proof created with an attacker-controlled private key as a valid signature for an unrelated victim P2WPKH or P2SH-P2WPKH address, allowing complete authentication bypass in applications using , , , or as proof that a user controls a Bitcoin address. In , the verifier obtained the public key from the caller-controlled witness and passed it to , where the supposed public-key mismatch check read the key from the same witness and compared it with itself: Since was originally parsed from that exact witness element, this comparison was tautological. The code v

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

RUSTSEC-2026-0334 is a unknown public vulnerability record for RustSec Rust. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether RustSec Rust is in your estate, then compare installed versions with the affected ranges. Affected version ranges have not been ingested yet. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: no CVSS/EPSS yet. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: rustsec. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 14, 2026 · RustSec Advisory DB

    Detected

    Affected versions of accepted a BIP-322 proof created with an attacker-controlled private key as a valid signature for an unrelated victim P2WPKH or P2SH-P2WPKH address, allowing complete authentication bypass in applications using , , , or as proof that a user controls a Bitcoin address. In , the verifier obtained the public key from the caller-controlled witness and passed it to , where the supp

Sources

  • RustSec Advisory DBVendor advisoryRUSTSEC-2026-0334

    Affected versions of accepted a BIP-322 proof created with an attacker-controlled private key as a valid signature for an unrelated victim P2WPKH or P2SH-P2WPKH address, allowing complete authentication bypass in applications using , , , or as proof that a user controls a Bitcoin

    crates.io