What is CVE-2026-63040?

CVE-2026-63040 is a high-severity vulnerability in Apache Inlong, classified under Files or Directories Accessible to External Parties. CVSS score: 8.1/10. Published 2026-08-20.

How severe is CVE-2026-63040?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Apache Inlong

CVE-2026-63040

Files or Directories Accessible to External Parties vulnerability in Apache InLong. StreamSource performs no authorization check, any authenticated user can logically delete ALL stream sources. This issue affects Apache InLong: from 2.0.0 before 2.4.0. Users are advised to upgrade to Apache InLong's 2.4.0 or cherry-pick [1] to solve it. [1] https://github.com/apache/inlong/pull/12145 .

Published 2026-08-20 · last modified 2026-08-27.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.1th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

lists.apache.org/thread/sbqrk88cjv3r9rnqfqgn31ox4711offy (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-63040?: CVE-2026-63040 is a high-severity vulnerability in Apache Inlong, classified under Files or Directories Accessible to External Parties. CVSS score: 8.1/10. Published 2026-08-20.
How severe is CVE-2026-63040?: High severity. CVSS v3 base score is 8.1 out of 10.