CVE-2025-29847: A vulnerability in Apache Linkis. Problem Description When using the JDBC engine and da When using the JDBC e

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HIGH 7.5REMOTEWATCHLISTUPGRADE

CVE-2025-29847 is a high-severity flaw (CVSS 7.5) affecting linkis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in Apache Linkis. Problem Description When using the JDBC engine and da When using the JDBC engine and data source functionality, if the URL parameter configured on the frontend has undergone multiple rounds of URL encoding, it may bypass the system's checks. This bypass can trigger a vulnerability that allows unauthorized access to system files via JDBC parameters. Scope of Impact This issue affects Apache Linkis: from 1.3.0

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-20, CWE-22
Published	2026-01-19
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-19 09:16 UTCPublished CVE record published
2026-06-17 09:05 UTCUpdated Record last modified

apache linkis UPGRADE

Affected: >= 1.3.0 and < 1.8.0

Fixed in: 1.8.0

Safe to downgrade to: a release before 1.3.0

1. Check installed version

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

2. UPGRADE to 1.8.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade linkis

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 1.3.0 (Debian / Ubuntu)

apt-cache madison linkis sudo apt install linkis=<VERSION_BEFORE_1.3.0> sudo apt-mark hold linkis

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

dnf --showduplicates list linkis sudo dnf downgrade linkis-<VERSION_BEFORE_1.3.0> sudo dnf versionlock add linkis

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-2025-29847?

linkis: upgrade to 1.8.0. Exact commands for each OS are on this page.

Is CVE-2025-29847 being exploited?

CVE-2025-29847 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-2025-29847 affect?

CVE-2025-29847 affects linkis. Severity is high (CVSS 7.5). A vulnerability in Apache Linkis. Problem Description When using the JDBC engine and da When using the JDBC engine and data source functionality, if the URL parameter configured on the frontend has undergone multiple rounds of URL encoding

How urgent is CVE-2025-29847?

Priority 51/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

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References

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