GHSA-5rg2-xv9j-gv5p

Source

https://github.com/advisories/GHSA-5rg2-xv9j-gv5p

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-5rg2-xv9j-gv5p/GHSA-5rg2-xv9j-gv5p.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-5rg2-xv9j-gv5p

Aliases

CVE-2026-54542

Published

2026-07-16T20:03:25Z

Modified

2026-07-16T20:26:44Z

Severity

3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

nimiq-primitives: Out-of-bounds panic in KeyNibbles::Add from oversized child suffix in a deserialized proof

Details

Impact

A malicious peer acting as a state-sync source can crash a syncing node with a crafted TrieChunk whose proof contains a TrieNodeChild whose suffix, when concatenated with the parent key via KeyNibbles::Add, exceeds the fixed 63-byte backing array. Add (primitives/src/key_nibbles.rs:332 / :341) indexes bytes[self.bytes_len()..self.bytes_len() + other.bytes_len()] with no combined-length check, causing an out-of-bounds slice panic (both the even- and odd-length branches).

KeyNibbles deserialization validates only the individual length <= 126, not the combined parent + suffix length. The panic occurs at put_chunk → child.key() → is_stump() → +, i.e. before proof.verify(), so no valid proof is required. As with the related child_index issue, exploitation requires being the victim's sync peer during state sync, and the resulting crash is transient (the node restarts and re-syncs).

Affected: core-rs-albatross <= 1.5.1 (nimiq-primitives).

Patches

Fixed in 1.6.0 via https://github.com/nimiq/core-rs-albatross/pull/3790 (commit eabfc3e2), which guards key-nibble concatenation against exceeding the maximum length instead of indexing out of bounds.

Workarounds

None other than syncing only from trusted peers. Upgrade to 1.6.0.

Database specific

{
    "cwe_ids":  [
        "CWE-125"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-16T20:03:25Z",
    "nvd_published_at":  null,
    "severity":  "LOW"
}

References

Affected packages

crates.io / nimiq-primitives

Package

Name: nimiq-primitives; View open source insights on deps.dev
Purl: pkg:cargo/nimiq-primitives

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.6.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-5rg2-xv9j-gv5p/GHSA-5rg2-xv9j-gv5p.json"