Biscuit is an authorization token with decentralized verification, offline attenuation and strong security policy enforcement based on a logic language. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it: 1. the public key of the previous block (used in the signature), 2. the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair. Tokens with third-party blocks containing trusted annotations generated through a third party block request. This has been addressed in version 4 of the specification. Users are advised to update their implementations to conform. There are no known workarounds for this vulnerability.
CVE-2024-42350
This low-severity CVE scores 3.0 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.0
- EG Score
- 3.0(medium)
- EG Risk
- —
- EPSS
- 21.2%
- KEV
- Not listed
Published
August 5, 2024
Last Modified
April 15, 2026
References (2)
- security-advisories@githubhttps://github.com/biscuit-auth/biscuit/commit/c87cbb5d778964d6574df3e9e6579567cad12fff
- security-advisories@githubhttps://github.com/biscuit-auth/biscuit/security/advisories/GHSA-rgqv-mwc3-c78m
Affected Packages
(1 across 1 ecosystem)
crates.io(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| biscuit-auth | — | 5.0.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 42× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 114 total refreshes for this CVE.
- 2026-07-22 14:07 UTCEPSS rescore
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Related CVEs(same CWE)
Same CWE
10 shownCWE-668
- CVE-2019-16541EG 9.9CRITICAL
- CVE-2019-20853EG 9.8CRITICAL
- CVE-2019-10781EG 9.8CRITICAL
- CVE-2019-19015EG 9.8CRITICAL
- CVE-2008-7291EG 9.8CRITICAL
- CVE-2019-12929EG 9.8EPSS 91%CRITICAL
- CVE-2019-12928EG 9.8EPSS 98%CRITICAL
- CVE-2018-7846EG 9.8EPSS 98%CRITICAL
- CVE-2018-18068EG 9.8CRITICAL
- CVE-2018-7072EG 9.8CRITICAL
Frequently asked(5)
What is CVE-2024-42350?
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Dependency Blast Radius
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