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Fencer Vulns
critical 9.8

CVE-2026-47846 json

Default superuser cassandra:cassandra left active when CASSANDRA_USER is customized

published 2026-06-18 4 mo ago modified 2026-10-26 13 d ago also BIT-cassandra-2026-47846 , EUVD-2026-37932

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits
0
none known

Summary

Bitnami Cassandra container images are affected by a retained default superuser vulnerability. When a custom administrator account is configured via the CASSANDRA_USER environment variable, the container initialization script creates the new superuser account but fails to drop the built-in cassandra account in certain scenarios. This leaves the default cassandra:cassandra superuser active as an unintended access path.

Affected versions — Container image: 4.0.x prior to 4.0.20-photon-5-r7; 4.1.x prior to 4.1.11-photon-5-r7; 5.0.x prior to 5.0.8-photon-5-r4 / 5.0.8-debian-12-r3.

Patch / fix

  • bitnami cassandra 4.0.20-0, 4.1.11-0, 5.0.8-0
  • Bitnami bitnami/cassandra 4.0.20-photon-5-r7, 4.1.11-photon-5-r7, 5.0.8-photon-5-r4

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami cassandra
>=4.0.0, <4.0.20-0
>=4.1.0, <4.1.11-0
>=5.0.0, <5.0.8-0
4.0.20-0
4.1.11-0
5.0.8-0

Affected products

  • Bitnami bitnami/cassandra

Classification

Weakness
  • CWE-798 Use of Hard-coded Credentials

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.