Auth bypass in N/a

CVE-2025-51869

Insecure Direct Object Reference (IDOR) vulnerability in Liner thru 2025-06-03 allows attackers to gain sensitive information via crafted space_id, thread_id, and message_id parameters to the v1/space/{space_id}/thread/{thread_id}/message/{message_id} endpoint.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-51869: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-51869?
CVE-2025-51869 is a high-severity vulnerability in N/a, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2025-07-21.
How severe is CVE-2025-51869?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-51869 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.