GHSA-49xc-52mp-cc9j

Source

https://github.com/advisories/GHSA-49xc-52mp-cc9j

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-49xc-52mp-cc9j/GHSA-49xc-52mp-cc9j.json

JSON Data

https://api.test.osv.dev/v1/vulns/GHSA-49xc-52mp-cc9j

Aliases

CVE-2026-40093

Published

2026-04-10T19:55:04Z

Modified

2026-04-10T20:04:42.580279Z

Severity

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

Summary

nimiq-blockchain is missing a wall-clock upper bound on block timestamps

Details

Impact

Block timestamp validation enforces that timestamp >= parent.timestamp for non-skip blocks and timestamp == parent.timestamp + MIN_PRODUCER_TIMEOUT for skip blocks, but there is no visible upper bound check against the wall clock. A malicious block-producing validator can set block timestamps arbitrarily far in the future. This directly affects reward calculations via Policy::supply_at() and batch_delay() in blockchain/src/reward.rs, inflating the monetary supply beyond the intended emission schedule.

Patches

TBD

Workarounds

No know workarounds.

Database specific

{
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-1284",
        "CWE-20"
    ],
    "severity": "CRITICAL",
    "nvd_published_at": "2026-04-09T21:16:11Z",
    "github_reviewed_at": "2026-04-10T19:55:04Z"
}

References

Affected packages

crates.io / nimiq-blockchain

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Last affected

1.3.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-49xc-52mp-cc9j/GHSA-49xc-52mp-cc9j.json"