ChainSafe/ssz

Issues somebody may already be working on are listed last. List everything by date

• BitList deserialization with reuseBytes: true mutates the input buffer

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  Difficulty 2/5 1-3 hours Newbie friendliness 82/100

  ChainSafe/ssz#559 · Opened Oct 19, 2026

• bitlist maxSize off by one and inconsistent progressive list default limits

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  Difficulty 2/5 1-3 hours Newbie friendliness 78/100

  ChainSafe/ssz#548 · Opened Sep 10, 2026

• Move progressive-list root helper functions to chainsafe/ssz

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  Difficulty 2/5 1-3 hours Newbie friendliness 58/100

  ChainSafe/ssz#542 · Opened Jul 21, 2026

• Container SSZ deserialize on short/empty inputs throws RangeError

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  Difficulty 3/5 1-2 days Newbie friendliness 62/100

  ChainSafe/ssz#502 · Opened Oct 7, 2025

• Add `random()` method to generate test data

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  meta-good-first-issue

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  ChainSafe/ssz#483 · Opened Apr 14, 2025

• Run all generic spec tests

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  ChainSafe/ssz#482 · Opened Apr 14, 2025

• Inefficient executeHashComputations of hashtree

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  ChainSafe/ssz#479 · 2 comments · Opened Mar 27, 2025

• Rename the concept of `Block` to the `paddedBytes` for more clarity

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  ChainSafe/ssz#468 · Opened Mar 5, 2025

• Lerna/NX not supported with Deno

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  ChainSafe/ssz#425 · Opened Dec 18, 2024

• Refresh simpleserialize.com

  May be free again @varunguleriaCodes claimed this 688 days ago, and no pull request is open. Open

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  meta-good-first-issue prio-medium scope-ux

  ChainSafe/ssz#407 · 2 comments · 1 assignee · Opened Oct 8, 2024

• Add electra to simpleserialize.com

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  scope-ux

  Difficulty 3/5 1-2 days Newbie friendliness 42/100

  ChainSafe/ssz#404 · 1 comment · Opened Sep 27, 2024

• Memory spike during hashTreeRoot

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  scope-memory

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  ChainSafe/ssz#403 · Opened Sep 16, 2024

• sha256 hash returns incorrect result if input's `(byteLength & 63) == 63`

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  meta-bug meta-investigate prio-medium

  Difficulty 3/5 1-2 days Newbie friendliness 48/100

  ChainSafe/ssz#376 · Opened May 27, 2024

• Add sliceFrom for ListBasicTreeViewDU

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  ChainSafe/ssz#368 · 2 comments · Opened Apr 19, 2024

• Add dark mode to simpleserialize.com

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  ChainSafe/ssz#365 · Opened Apr 1, 2024

• Allow to provide override values to `defaultValue()`

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  Difficulty 3/5 1-2 days Newbie friendliness 65/100

  ChainSafe/ssz#360 · 3 comments · Opened Mar 26, 2024

• Improve performance of digest64

  May be free again A pull request for this issue was closed without being merged. Open

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  ChainSafe/ssz#357 · Opened Mar 25, 2024

• Invalid gindex calculation

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  meta-bug prio-medium

  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  ChainSafe/ssz#311 · 2 comments · 2 reactions · Opened Mar 9, 2023

• Add CodeCov to SSZ

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  ChainSafe/ssz#252 · Opened Apr 8, 2022

• Don't serialize immutable Validator data

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  meta-investigate prio-low scope-memory

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  ChainSafe/ssz#228 · Opened Jan 18, 2022

• Add ByteVectorShared - optimize validator object memory

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  meta-investigate prio-low scope-memory

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  ChainSafe/ssz#226 · Opened Jan 17, 2022

• using Vector capabilities of the CPU for sha256 in ssz merkelization of lists

  May be free again @g11tech claimed this 1792 days ago, and no pull request is open. Open

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  ChainSafe/ssz#213 · 7 comments · 1 assignee · Opened Nov 22, 2021

• Refactor tree view model - built-in fast caches

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  ChainSafe/ssz#196 · Opened Sep 16, 2021

• Add Karma to test in browser env

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  ChainSafe/ssz#132 · Opened Jun 18, 2021

• Add design doc to README

  May be free again @philknows claimed this 740 days ago, and no pull request is open. Open

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  ChainSafe/ssz#69 · 1 assignee · Opened Jan 20, 2021

• SSZ Union Deserialization Vulnerable to Trailing Data for Certain Variants

  Possibly taken @shadowzzed claimed this 40 days ago. Open

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  Difficulty 2/5 1-3 hours Newbie friendliness 68/100

  ChainSafe/ssz#507 · Opened Nov 27, 2025

• Fix publish CI step

  Possibly taken A pull request linked to this issue is open or already merged. Open

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  ChainSafe/ssz#396 · 3 comments · Opened Aug 19, 2024

• Investigating Tree Hashing in Lodestar

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  meta-investigate

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  ChainSafe/ssz#355 · 5 comments · Opened Mar 20, 2024

• Investigate inconsistent performance of hashTreeRoot()

  Possibly taken @twoeths claimed this 2071 days ago. Open

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  ChainSafe/ssz#78 · 5 comments · 2 reactions · 1 assignee · Opened Feb 15, 2021