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Krux

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High 78 AI analysisMessage 95 · Strong
KX KruxKrux BitcoinHardware wallets

fix: verify PSBT input amounts before showing the fee

This commit fixes a security flaw in Krux, a Bitcoin signing device. Before the fix, an attacker could trick the device into showing a low transaction fee on screen while actually signing a much higher fee. The fix makes the device verify …

Fixes fee-display/sighash amount mismatchAdds prevout txid hash verification for non_witness_utxoMandates non_witness_utxo for legacy inputs
fc808059by odudex+353−122 files
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Moderate 66 AI analysisMessage 85 · Strong
KX KruxKrux BitcoinHardware wallets

fix: reject a PSBT whose outputs exceed its inputs

This commit fixes a bug in Krux, a Bitcoin signing device, where a malformed transaction whose outputs spend more than its inputs could be loaded and shown to the user. Normally such a transaction is impossible on the Bitcoin network, but …

Input validation gap in PSBT parsingUI rendering bug masking invalid transaction economicsPotential social-engineering / user-confusion attack
d6813d88by odudex+52−02 files
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Moderate 62 AI analysisMessage 90 · Strong
KX KruxKrux BitcoinHardware wallets

feat: warn when PSBT input amounts cannot be verified

This commit adds a warning screen to Krux, a hardware signing device, when it is asked to sign a multi-input Bitcoin transaction where the amounts of some inputs cannot be independently verified. The risk is that a malicious transaction co…

New user-facing warning for unverified multi-input SegWit amountsDetection logic tied to BIP143 signature semantics and inp.is_verifiedDoes not enforce previous-transaction inclusion; user can still proceed
518b3314by odudex+159−24 files
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Moderate 55 AI analysisMessage 82 · Strong
KX KruxKrux BitcoinHardware wallets

chore: bump MaixPy with Shannon changes and RNG removal

This commit updates a bundled firmware component called MaixPy. The commit message says it fixes a 'Shannon heap overflow,' removes an unused random-number binding, and drops support for one hardware variant (Maix Bit). A heap overflow is …

Commit message explicitly mentions fixing a heap overflowRemoval of an unused cryptographic/randomness binding (os.urandom)Submodule bump only; no source-level patch visible in this commit
5c4ece9aby odudex+1−11 file
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Moderate 52 AI analysisMessage 85 · Strong
KX KruxKrux BitcoinHardware wallets

fix: remove Maix Bit and CIF camera support

This commit removes support for an old, discontinued hardware device called the Maix Bit from the Krux Bitcoin wallet firmware. The commit message says the Maix Bit's camera resolution (CIF) was the only one that fed frames larger than QVG…

Buffer overflow / scratch buffer overflow claimed in commit message (49,152 bytes)Removal of vulnerable hardware code path rather than hardening the entropy moduleDiscontinuation of affected device reduces real-world exposure
8090ac73by odudex+11−1279 files
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Low 37 AI analysisMessage 90 · Strong
KX KruxKrux BitcoinHardware wallets

docs: self-host math, remove MathJax/require.js CDN

This change removes third-party web scripts (MathJax and require.js loaded from a content delivery network) from the project's documentation and replaces them with self-hosted, pre-rendered math images. That eliminates a supply-chain risk …

Removal of cdnjs MathJax and require.js external script loadsSelf-hosting of rendered math assets as static SVGsExplicit commit message reference to supply-chain class (polyfill.io incident)
492820a1by odudex+8779−8928 files
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High 74 AI analysisMessage 83 · Strong
KX KruxKrux BitcoinHardware wallets

Security Hardening (#851)

This commit fixes four security weaknesses in Krux, a Bitcoin hardware-wallet project. The changes prevent: (1) encrypted backups from declaring zero or very low password-stretching effort, which would make them easy to brute-force; (2) mu…

Minimum PBKDF2 iteration enforcement against trivial work-factor envelopesRejection of multiple origin-less xpubs in multi-key descriptorsSD file-list filtering of traversal entries ('.', '..', path separators)
8f62c860by Odudex+263−39 files
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Moderate 60 AI analysisMessage 93 · Strong
KX KruxKrux BitcoinHardware wallets

fix: warn user before signing raw hashes in message signing (#846)

This commit adds a warning screen to Krux's message-signing feature when the user is about to sign a raw 32-byte hash or a 64-character hex string. Previously, the device would silently treat such inputs as already-hashed values and sign t…

Silent signing of raw 32-byte values allowed transaction sighash spoofingMessage signing path treated raw hashes identically to SHA256(message) digestsFix explicitly references 'C3 of #843' as a security concern
23bc73b3by Odudex+46−726 files
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High 78 AI analysisMessage 98 · Strong
KX KruxKrux BitcoinHardware wallets

fix: reject PSBT inputs with non-standard sighash types before signing (#844)

Krux is a small, open-source Bitcoin signing device (hardware wallet). This commit fixes a security flaw where the device would sign transactions even if the sender asked it to use unusual Bitcoin signature modes—specifically SIGHASH_NONE,…

Explicit security fix for externally-reported audit finding (#843 C2)Pre-sign validation added to reject non-standard sighash typesRelevant to transaction-replacement / fund-redirect attacks via SIGHASH_NONE/SINGLE/ANYONECANPAY
e5318112by Odudex+115−03 files
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Low 36 AI analysisMessage 98 · Strong
KX KruxKrux BitcoinHardware wallets

chore: require urllib3 >2.6 security fix for CVE-2025-66471 urllib3 is dependency of requests and translate, used in dev tools

This commit updates the project's Python dependency lock file to require urllib3 version 2.6.0 or newer. The commit message says this is a security fix for CVE-2025-66471, a vulnerability in the urllib3 library. urllib3 is used indirectly …

Dependency version bump for a reported CVE (CVE-2025-66471)urllib3 constrained to >=2.6.0Affected packages moved from main to dev dependency group, limiting runtime exposure
268f3f7bby odudex+23−172 files
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Informational 15 AI analysisMessage 73 · Adequate
KX KruxKrux BitcoinHardware wallets

Refactor capture entropy test to be less fragile, more DRY (#781)

This commit only refactors a single test file to make the tests less brittle and remove duplicated code. It does not change any production code, cryptographic logic, or user-facing behavior. There is no security issue here.

f091ec71by kdmukai+18−511 file
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Informational 15 AI analysisMessage 63 · Adequate
KX KruxKrux BitcoinHardware wallets

Minor UI change: Add line break for "bits/px" Shannon's entropy text (#780)

This commit is a cosmetic user-interface change. It splits a single line of text showing camera-captured entropy statistics into two lines so it fits better on small screens. No security-sensitive code, calculations, or behavior was altere…

30efd634by kdmukai+52−2725 files
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Low 37 AI analysisMessage 58 · Thin
KX KruxKrux BitcoinHardware wallets

Give warning for non-ASCII BIP39-passphrase (#769)

This change relaxes a safety rule in the Krux hardware wallet firmware. Previously, if a user scanned a BIP39 passphrase QR code containing non-English/non-ASCII characters (for example accented letters or symbols), Krux would block it wit…

Relaxation of input validation for BIP39 passphraseNon-ASCII passphrase now allowed after warning instead of blockedBIP39 NFKD normalization not performed due to firmware size constraints
fad4a0b8by Tads+53−1127 files
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Low 44 AI analysisMessage 58 · Thin
KX KruxKrux BitcoinHardware wallets

Embit update: Improved BIP39 mnemonic validation (#759)

This commit tightens how a Bitcoin wallet tool (Krux) checks recovery phrases. Previously, the code accepted phrases with extra spaces, tabs, newlines, or commas between words because it used a loose 'strip and split' approach. Now it requ…

Stricter input validation for BIP39 mnemonic parsingRejection of whitespace-normalized parsing that could mask malformed user inputAlignment with upstream embit validation behavior
6806a792by Odudex+43−33 files
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Moderate 64 AI analysisMessage 74 · Adequate
KX KruxKrux BitcoinHardware wallets

Release 25.10.1 (#757)

This release fixes a bug in Krux, a Bitcoin signing device firmware. When a user scanned an encrypted QR code meant to provide a wallet passphrase, address, or wallet descriptor, the device could silently treat the raw encrypted bytes as t…

Silent derivation of wrong wallet from encrypted passphrase/data due to uncaught decoding exceptionCross-runtime behavior difference: CPython UnicodeDecodeError vs MaixPy TypeErrorMissing input validation for passphrase character set
64212093by Odudex+259−610 files
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