Every CVE Search/ Get API key

CVE-2020-13955

Missing Authentication for Critical Function in Apache Calcite

5.9 MediumFix available

HttpUtils#getURLConnection method disables explicitly hostname verification for HTTPS connections making clients vulnerable to man-in-the-middle attacks. Calcite uses internally this method to connect with Druid and Splunk so information leakage may happen when using the respective Calcite adapters. The method itself is in a utility class so people may use it to create vulnerable HTTPS connections for other applications. From Apache Calcite 1.26 onwards, the hostname verification will be performed using the default JVM truststore.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

2.15%Up 0.9 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.9

HttpUtils#getURLConnection method disables explicitly hostname verification for HTTPS connections making clients vulnerable to man-in-the-middle attacks. Calcite uses internally this method to connect with Druid and Splunk so information leakage may happen when using the respective Calcite adapters. The method itself is in a utility class so people may use it to create vulnerable HTTPS connections for other applications. From Apache Calcite 1.26 onwards, the hostname verification will be performed using the default JVM truststore.

Record
CVE-2020-13955
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness
CWE-295
Updated
2026-11-02
CVE List No score

HttpUtils#getURLConnection method disables explicitly hostname verification for HTTPS connections making clients vulnerable to man-in-the-middle attacks. Calcite uses internally this method to connect with Druid and Splunk so information leakage may happen when using the respective Calcite adapters. The method itself is in a utility class so people may use it to create vulnerable HTTPS connections for other applications. From Apache Calcite 1.26 onwards, the hostname verification will be performed using the default JVM truststore.

Record
CVE-2020-13955
Updated
2026-11-02
EUVDEUVD-2021-0835 No score

HttpUtils#getURLConnection method disables explicitly hostname verification for HTTPS connections making clients vulnerable to man-in-the-middle attacks. Calcite uses internally this method to connect with Druid and Splunk so information leakage may happen when using the respective Calcite adapters. The method itself is in a utility class so people may use it to create vulnerable HTTPS connections for other applications. From Apache Calcite 1.26 onwards, the hostname verification will be performed using the default JVM truststore.

Record
EUVD-2021-0835
Updated
2026-11-03
GitHub AdvisoriesGHSA-hxp5-8pgq-mgv9 5.9

Missing Authentication for Critical Function in Apache Calcite

"HttpUtils#getURLConnection method disables explicitly hostname verification for HTTPS connections making clients vulnerable to man-in-the-middle attacks. Calcite uses this method internally to connect with Druid and Splunk so information leakage may happen when using the respective Calcite adapters. The method itself is in a utility class so people may use it to create vulnerable HTTPS connections for other applications. From Apache Calcite 1.26 onwards, the hostname verification will be performed using the default JVM truststore."

Record
GHSA-hxp5-8pgq-mgv9
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-295
Updated
2026-11-02
OSV 5.9

HttpUtils#getURLConnection method disables explicitly hostname verification for HTTPS connections making clients vulnerable to man-in-the-middle attacks. Calcite uses internally this method to connect with Druid and Splunk so information leakage may happen when using the respective Calcite adapters. The method itself is in a utility class so people may use it to create vulnerable HTTPS connections for other applications. From Apache Calcite 1.26 onwards, the hostname verification will be performed using the default JVM truststore.

Record
CVE-2020-13955
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVGHSA-hxp5-8pgq-mgv9 5.9

Missing Authentication for Critical Function in Apache Calcite

"HttpUtils#getURLConnection method disables explicitly hostname verification for HTTPS connections making clients vulnerable to man-in-the-middle attacks. Calcite uses this method internally to connect with Druid and Splunk so information leakage may happen when using the respective Calcite adapters. The method itself is in a utility class so people may use it to create vulnerable HTTPS connections for other applications. From Apache Calcite 1.26 onwards, the hostname verification will be performed using the default JVM truststore."

Record
GHSA-hxp5-8pgq-mgv9
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-295
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.apache.calcite:calcite-core
Maven
before 1.26.0
1.26.0
org.apache.calcite:calcite-druid
Maven
before 1.26.0
1.26.0
org.apache.calcite:calcite-splunk
Maven
before 1.26.0
1.26.0
org.apache.calcite:calcite-core
Maven
before 1.26.0, plus listed versions
0.9.1-incubating0.9.2-incubating1.0.0-incubating1.1.0-incubating1.10.0
Show 23 moreShow less
1.11.01.12.01.13.01.14.01.15.01.16.01.17.01.18.01.19.01.2.0-incubating1.20.01.21.01.22.01.23.01.24.01.25.01.3.0-incubating1.4.0-incubating1.5.01.6.01.7.01.8.01.9.0
1.26.0
org.apache.calcite:calcite-druid
Maven
before 1.26.0, plus listed versions
1.10.01.11.01.12.01.13.01.14.0
Show 13 moreShow less
1.15.01.16.01.17.01.18.01.19.01.20.01.21.01.22.01.23.01.24.01.25.01.8.01.9.0
1.26.0
org.apache.calcite:calcite-splunk
Maven
before 1.26.0, plus listed versions
0.9.1-incubating0.9.2-incubating1.0.0-incubating1.1.0-incubating1.10.0
Show 23 moreShow less
1.11.01.12.01.13.01.14.01.15.01.16.01.17.01.18.01.19.01.2.0-incubating1.20.01.21.01.22.01.23.01.24.01.25.01.3.0-incubating1.4.0-incubating1.5.01.6.01.7.01.8.01.9.0
1.26.0

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-13955 is a medium vulnerability (CVSS 5.9) in Apache Calcite, published October 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.15%, the 82nd percentile. Fixed in org.apache.calcite:calcite-core 1.26.0.

References

MoveEnter Open