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CVE-2024-41949

19
FAUCET Score

CVE-2024-41949 affects biscuit-rust, an authentication and authorization token implementation, by allowing a malicious user to forge a ThirdPartyBlock request. This can trick a third-party authority into generating a Datalog block that trusts an incorrect keypair, leading to potential authentication bypass or unauthorized access. The vulnerability has a CVSS score of 6.4 (Medium), indicating a network-based attack with low complexity and privileges, but a change in scope, resulting in low confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.0.0CPE matchmatch criteria
cpe:2.3:a:biscuitsec:biscuit-auth:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

3.0LOW

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.3
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
14.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 17th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: biscuit-authFixed in: 5.0.0

Vendor Advisories (1)

rustGHSA-p9w4-585h-g3c7low

biscuit-auth vulnerable to public key confusion in third party block

Jul 31, 2024

References

github.com / biscuit-auth/biscuit-rust/security/advisories/GHSA-p9w4-585h-g3c7
Third Party Advisory