RUSTSEC-2026-0229

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Source

https://rustsec.org/advisories/RUSTSEC-2026-0229

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0229.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2026-0229

Published

2026-08-01T12:00:00Z

Modified

2026-08-02T18:00:03.545924446Z

Severity

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

Summary

NIP-98 authorization parsing permits resource exhaustion

Details

The NIP-98 HTTP authorization parser Base64-decoded the complete authorization value and parsed the resulting JSON event without applying an application-level size limit. Both operations occurred before the event's signature and authorization fields could be validated.

An unauthenticated remote client could send an oversized Authorization: Nostr header to a server using this parser. Each request caused memory allocation and decoding and JSON parsing work proportional to the supplied value, allowing repeated requests to consume server memory and CPU. The impact depends on any lower HTTP header limit already enforced by the hosting server. The issue does not bypass NIP-98 authentication or disclose protected data.

The parser now rejects oversized encoded input before Base64 allocation and rejects decoded authorization events larger than 64 KiB before JSON parsing.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / nostr

Package

Name: nostr; View open source insights on deps.dev
Purl: pkg:cargo/nostr

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

0.44.7

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "functions": [],
        "arch": [],
        "os": []
    }
}