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    2 vulnerabilities found for bitcoinjs-lib by bitcoinjs

    CVE-2026-107846 (GCVE-0-2026-107846)

    Vulnerability from nvd – Published: 2026-11-04 19:02 – Updated: 2026-11-09 16:50
    VLAI
    Title
    bitcoinjs-lib: Undetected merkle node duplication in block root computation validates a forged transaction list
    Summary
    bitcoinjs-lib is a JavaScript Bitcoin library for Node.js and browsers. From 2.3.0 until 5.2.1, 6.1.8, and 7.0.2, fastMerkleRoot pads odd Merkle-tree levels by hashing the final node with itself but does not report adjacent duplicate hashes. The affected block-root verifier was introduced as Block.checkMerkleRoot() alongside Block.calculateMerkleRoot(), while later versions expose validation through checkTxRoots() and __checkMerkleRoot; these validation paths can accept a recomputed root without checking for mutation. A peer can append duplicate transactions so a different transaction list retains the original Merkle root, block header, proof of work, and block identifier. Consumers that rely on block-root validation, including explorers, exchange indexers, or SPV clients, can process a duplicated transaction twice or blacklist the shared block hash and reject the honest block. This issue is fixed in versions 5.2.1, 6.1.8, and 7.0.2.
    Severity
    9.3 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:H/SA:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-09 16:49 UTC
    CWE
    • CWE-354 - Improper Validation of Integrity Check Value
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7841 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    bitcoinjs bitcoinjs-lib Affected: >= 2.3.0, < 5.2.1
    Affected: >= 6.0.0, < 6.1.8
    Affected: >= 7.0.0-rc.0, < 7.0.2
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-107846 (GCVE-0-2026-107846)

    Vulnerability from cvelistv5 – Published: 2026-11-04 19:02 – Updated: 2026-11-09 16:50
    VLAI
    Title
    bitcoinjs-lib: Undetected merkle node duplication in block root computation validates a forged transaction list
    Summary
    bitcoinjs-lib is a JavaScript Bitcoin library for Node.js and browsers. From 2.3.0 until 5.2.1, 6.1.8, and 7.0.2, fastMerkleRoot pads odd Merkle-tree levels by hashing the final node with itself but does not report adjacent duplicate hashes. The affected block-root verifier was introduced as Block.checkMerkleRoot() alongside Block.calculateMerkleRoot(), while later versions expose validation through checkTxRoots() and __checkMerkleRoot; these validation paths can accept a recomputed root without checking for mutation. A peer can append duplicate transactions so a different transaction list retains the original Merkle root, block header, proof of work, and block identifier. Consumers that rely on block-root validation, including explorers, exchange indexers, or SPV clients, can process a duplicated transaction twice or blacklist the shared block hash and reject the honest block. This issue is fixed in versions 5.2.1, 6.1.8, and 7.0.2.
    Severity
    9.3 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:H/SA:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-09 16:49 UTC
    CWE
    • CWE-354 - Improper Validation of Integrity Check Value
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7841 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    bitcoinjs bitcoinjs-lib Affected: >= 2.3.0, < 5.2.1
    Affected: >= 6.0.0, < 6.1.8
    Affected: >= 7.0.0-rc.0, < 7.0.2
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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