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Malicious package

solana-address-codecnpm

Advisory published Updated

solana-address-codec is a confirmed malicious npm package (MAL-2026-6924) that typosquats a legitimate package to trick installs (malicious versions 1.0.0, 1.0.1, 1.0.2…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in solana-address-codec (npm)

MAL-2026-6924
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall solana-address-codec

What this malware does

The package name resembles utilities in the Solana ecosystem (e.g., @solana/addresses and address codec helpers), which is a common target for typosquat and confusion attacks against crypto tooling. No file-level behavioral evidence was produced for this version, so malicious intent cannot be confirmed or ruled out from the available signals. Given the crypto-adjacent naming and the absence of behavioral evidence, human review is appropriate before allowing installers to consume this package.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

6 flagged
1.0.01.0.11.0.21.0.31.0.41.0.5

Indicators of compromise (SHA-256)

d0da02ad73e46c13e48f34ef7449ff27d9d3beeeb28d6c2b905e30ee3fd810d1
3f2f64d7bca318f2031d51d2e0ec7317b68bdd782d6240660f84c91334a08f7a
899de0eb78e01638865919f7f34afab0b110c79fadc9e2b5637b2cbf66996702
537147eb249df93da5d3fd546a9311c5aa9299992da5b934f8f4d21d23895247
78caddee9e945b390edc41e5ec7f7e185d4e3b7a1096ed57b0b7a468d8d1e7dd
8e1008cff7bb82464ce9ade3ae5c353e929b7367800b404a038baa8a026c69ae
937454bc12b5a7dc25c6802ee1de594777ed3425ef79b2835a7f1d0fd2bf7925

Detection & response playbook

Typosquat
  1. Find it

    Search your lockfiles and build artifacts for solana-address-codec (6 malicious versions).

  2. If you installed it — respond

    solana-address-codec is a typosquat — you almost certainly intended a legitimately-named package. Remove solana-address-codec, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

  3. Did it already run?

    If solana-address-codec was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. solana-address-codec on npm has been identified as a malicious package (versions 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-9jx5-jcp6-qmqqIN-MAL-2026-008834IN-MAL-2026-008930IN-MAL-2026-009494IN-MAL-2026-009489IN-MAL-2026-009492IN-MAL-2026-009491

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks solana-address-codec-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

solana-address-codec (npm) malicious package — MAL-2026-6924 | O3 Security