CVE-2020-9492

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-01-26 · updated 2026-06-17
Weakness: CWE-863

Description

In Apache Hadoop 3.2.0 to 3.2.1, 3.0.0-alpha1 to 3.1.3, and 2.0.0-alpha to 2.10.0, WebHDFS client might send SPNEGO authorization header to remote URL without proper verification.

Affected products

Apache Software Foundation Apache Hadoop: from 2.0.0 through 2.10.0; from 3.0.0 through 3.1.3; from 3.2.0 through 3.2.1
Apache Software Foundation Apache Solr: 8.6.0, 8.6.2
Oracle Financial Services Crime And Compliance Management Studio: 8.0.8.2.0, 8.0.8.3.0

References

https://lists.apache.org/thread.html/r0a534f1cde7555f7208e9f9b791c1ab396d215eaaef283b3a9153429%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r49c9ab444ab1107c6a8be8a0d66602dec32a16d96c2631fec8d309fb%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r4a57de5215494c35c8304cf114be75d42df7abc6c0c54bf163c3e370%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r513758942356ccd0d14538ba18a09903fc72716d74be1cb727ea91ff%40%3Cgeneral.hadoop.apache.org%3E
https://lists.apache.org/thread.html/r6341f2a468ced8872a71997aa1786ce036242413484f0fa68dc9ca02%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r6c2fa7949738e9d39606f1d7cd890c93a2633e3357c9aeaf886ea9a6%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r79201a209df9a4e7f761e537434131b4e39eabec4369a7d668904df4%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r79323adac584edab99fd5e4b52a013844b784a5d4b600da0662b33d6%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r9328eb49305e4cacc80e182bfd8a2efd8e640d940e24f5bfd7d5cb26%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/r941e9be04efe0f455d20aeac88516c0848decd7e7b1d93d5687060f4%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rb12afaa421d483863c4175e42e5dbd0673917a3cff73f3fca4f8275f%40%3Cissues.solr.apache.org%3E
https://lists.apache.org/thread.html/rc0057ebf32b646ab47f7f5744a8948332e015c39044cbb9d87ea76cd%40%3Ccommits.druid.apache.org%3E

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