How severe is CVE-2023-27531?

CVE-2023-27531 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-27531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-27531?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-27531 have an EU (EUVD) identifier?

Yes. CVE-2023-27531 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-1812.

When was CVE-2023-27531 published?

CVE-2023-27531 was published on 2025-01-09 and last updated on 2026-06-17.

CVE-2023-27531

CVE-2023-27531 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-1812
Weakness: CWE-502
Published: 2025-01-09
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2023-27531?: There is a deserialization of untrusted data vulnerability in the Kredis JSON deserialization code
How severe is CVE-2023-27531?: CVE-2023-27531 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-27531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-27531?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-27531 have an EU (EUVD) identifier?: Yes. CVE-2023-27531 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-1812.
When was CVE-2023-27531 published?: CVE-2023-27531 was published on 2025-01-09 and last updated on 2026-06-17.

References

https://discuss.rubyonrails.org/t/cve-2023-27531-possible-deserialization-of-untrusted-data-vulnerability-in-kredis-json/82467

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