What is CVE-2025-27531?

CVE-2025-27531 is a critical-severity vulnerability in Apache Inlong, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-06-06.

How severe is CVE-2025-27531?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Apache Inlong

CVE-2025-27531

Deserialization of Untrusted Data vulnerability in Apache InLong. This issue affects Apache InLong: from 1.13.0 before 2.1.0, this issue would allow an authenticated attacker to read arbitrary files by double writing the param. Users are recommended to upgrade to version 2.1.0, which fixes the issue.

Vulnerability class: Insecure Deserialization

Published 2025-06-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000

Affected products

Apache Inlong
Apache Software Foundation Inlong — versions 1.13.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

lists.apache.org/thread/r62lkqrr739wvcb60j6ql6q63rh4bxx5 (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2025-27531?: CVE-2025-27531 is a critical-severity vulnerability in Apache Inlong, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-06-06.
How severe is CVE-2025-27531?: Critical severity. CVSS v3 base score is 9.8 out of 10.