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CVE-2025-59305

28
FAUCET Score

CVE-2025-59305 describes an improper authorization vulnerability in Langfuse versions prior to d67b317, allowing any authenticated user to manipulate background migration functions. This flaw enables unauthorized access to TRPC endpoints, potentially leading to data corruption or denial of service within the Langfuse platform. Rated as HIGH severity (CVSS 7.6), the vulnerability can be exploited remotely with low attack complexity and requires only low privileges, impacting confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.1.0, < 3.109.0CPE matchmatch criteria
cpe:2.3:a:langfuse:langfuse:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 5th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

depthfirst.com / post/how-an-authorization-flaw-reveals-a-common-security-blind-spot-cve-2025-59305-case-study
ExploitThird Party Advisory