Deserialization in Rails Kredis JSON

CVE-2023-27531

There is a deserialization of untrusted data vulnerability in the Kredis JSON deserialization code

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (42.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% 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-2023-27531: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-27531?
CVE-2023-27531 is a medium-severity vulnerability in Rails Kredis JSON, classified under Deserialization of Untrusted Data. CVSS score: 5.3/10. Published 2025-01-09.
How severe is CVE-2023-27531?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-27531 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.