CVE-2026-63040: Files or Directories Accessible to External Parties vulnerability in Apache InLong. StreamSource performs no a

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HIGH 8.1WATCHLISTUPGRADE

CVE-2026-63040 is a high-severity flaw (CVSS 8.1) affecting inlong. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 .

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-552
Published	2026-08-20
Last modified	2026-10-18

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-20 16:17 UTCPublished CVE record published
2026-10-18 20:10 UTCUpdated Record last modified

apache inlong UPGRADE

Affected: >= 2.0.0 and < 2.4.0

Fixed in: 2.4.0

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy inlong || rpm -q inlong || inlong --version

2. UPGRADE to 2.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade inlong

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade inlong

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison inlong sudo apt install inlong=<VERSION_BEFORE_2.0.0> sudo apt-mark hold inlong

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list inlong sudo dnf downgrade inlong-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add inlong

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-63040?

inlong: upgrade to 2.4.0. Exact commands for each OS are on this page.

Is CVE-2026-63040 being exploited?

CVE-2026-63040 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-63040 affect?

CVE-2026-63040 affects inlong. Severity is high (CVSS 8.1). 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

How urgent is CVE-2026-63040?

Priority 46/100. High severity; On your watchlist

Software pages

GitHub vulnerabilities

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References

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