CVE-2023-27602

CVE-2023-27602 is a critical-severity vulnerability in Apache Linkis with a CVSS 3.x base score of 9.8. 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-434.

Key facts

• Severity: Critical (CVSS 3.x base score 9.8)
• EPSS exploit prediction: 2% (78th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-434
• Affected product: Apache Linkis
• Published: 2023-04-10
• Last modified: 2026-06-17

Description

In Apache Linkis <=1.3.1, The PublicService module uploads files without restrictions on the path to the uploaded files, and file types. We recommend users upgrade the version of Linkis to version 1.3.2.  For versions <=1.3.1, we suggest turning on the file path check switch in linkis.properties `wds.linkis.workspace.filesystem.owner.check=true` `wds.linkis.workspace.filesystem.path.check=true`

Frequently asked questions

What is CVE-2023-27602?

In Apache Linkis <=1.3.1, The PublicService module uploads files without restrictions on the path to the uploaded files, and file types. We recommend users upgrade the version of Linkis to version 1.3.2.  For versions <=1.3.1, we suggest turning on the file path check switch in linkis.properties `wds.linkis.workspace.filesystem.owner.check=true` `wds.linkis.workspace.filesystem.path.check=true`

How severe is CVE-2023-27602?

CVE-2023-27602 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-27602 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27602?

CVE-2023-27602 affects Apache Linkis. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27602?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-27602 published?

CVE-2023-27602 was published on 2023-04-10 and last updated on 2026-06-17.

References

• http://www.openwall.com/lists/oss-security/2023/04/10/1
• http://www.openwall.com/lists/oss-security/2023/04/18/4
• http://www.openwall.com/lists/oss-security/2023/04/19/3
• https://lists.apache.org/thread/wt70jfc0yfs6s5g0wg5dr5klnc48nsp1

Affected products (1)

• cpe:2.3:a:apache:linkis:*:*:*:*:*:*:*:*

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