CVE-2021-26920

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

9.88% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 95.1% of scored records. A rank, not a probability.

NVD base score

6.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-07-02 07:20Z5 YR AGO

Last updated

2024-08-03 20:33Z2 YR AGO

Reserved

2021-02-09

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-610Externally Controlled Reference to a Resource in Another SphereClass
• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass

Data version

5.1

Document digest

3446a6fdaee3b981a81556da012e76f1996ef0e530e4384f8f3608382acb5b0a

• lists.apache.orghttps://lists.apache.org/thread.html/r29e45561343cc5cf7d3290ee0b0e94e565faab19c20d022df9b5e29c%40%3Cdev.druid.apache.org%3Ex_refsource_MISC
• www.openwall.com[oss-security] 20210702 CVE-2021-26920: Apache Druid: The HTTP inputSource allows authenticated users to read data from other sources than intendedhttp://www.openwall.com/lists/oss-security/2021/07/02/1mailing-listx_refsource_MLIST
• lists.apache.org[announce] 20210701 CVE-2021-26920: Apache Druid: The HTTP inputSource allows authenticated users to read data from other sources than intendedhttps://lists.apache.org/thread.html/r61aab724cf97d80da7f02d50e9af6de5c7c40dd92dab7518746fbaa2%40%3Cannounce.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[druid-dev] 20210923 CVE-2021-36749: Apache Druid: The HTTP inputSource allows authenticated users to read data from other sources than intended (incomplete fix of CVE-2021-26920)https://lists.apache.org/thread.html/rc9400a70d0ec5cdb8a3486fc5ddb0b5282961c0b63e764abfbcb9f5d%40%3Cdev.druid.apache.org%3Emailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20210923 CVE-2021-36749: Apache Druid: The HTTP inputSource allows authenticated users to read data from other sources than intended (incomplete fix of CVE-2021-26920)http://www.openwall.com/lists/oss-security/2021/09/24/1mailing-listx_refsource_MLIST
• lists.apache.org[announce] 20210923 CVE-2021-36749: Apache Druid: The HTTP inputSource allows authenticated users to read data from other sources than intended (incomplete fix of CVE-2021-26920)https://lists.apache.org/thread.html/r304dfe56a5dfe1b2d9166b24d2c74ad1c6730338b20aef77a00ed2be%40%3Cannounce.apache.org%3Emailing-listx_refsource_MLIST