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Fencer Intel
medium 4.6

CVE-2020-7921 json

Administrative action may disable enforcement of per-user IP whitelisting

published 6y ago modified last mo. also BIT-mongodb-2020-7921 , EUVD-2020-28852

cvss
4.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

Improper serialization of internal state in the authorization subsystem in MongoDB Server's authorization subsystem permits a user with valid credentials to bypass IP whitelisting protection mechanisms following administrative action. This issue affects MongoDB Server v4.2 versions prior to 4.2.3; MongoDB Server v4.0 versions prior to 4.0.15; MongoDB Server v4.3 versions prior to 4.3.3and MongoDB Server v3.6 versions prior to 3.6.18.

Patch / fix

  • bitnami mongodb 3.6.18, 4.0.15, 4.2.3, 4.3.3
  • MongoDB Inc. MongoDB Server 3.6.18, 4.0.15, 4.2.3, 4.3.3

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-218-01 updated cvss 5.3

ABB Ability Zenon

  • ABB Ability Zenon /all IIoT services with MongoDB 4.2
    affected: mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

red hat product security vex CVE-2020-7921 updated cvss 5.3

mongodb: Improper serialization permits bypass of IP based authentication restrictions

  • Red Hat OpenStack Platform 10 (Newton) mongodb, mongodb-server Red Hat Software Collections rh-mongodb34-mongodb, rh-mongodb36-mongodb, rh-mongodb34-mongodb-test, rh-mongodb36-mongodb-test, rh-mongodb34-mongodb-server, rh-mongodb36-mongodb-server, +4 more
    affected: workaround, no fix planned “There is no known mitigation for this issue, the flaw can only be resolved by applying updates.”
  • Red Hat Satellite 6 mongodb, libmongodb, mongodb-server Red Hat Update Infrastructure 3 for Cloud Providers mongodb
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 4.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
OSV 3.1 4.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami mongodb
>=3.6.0, <3.6.18
>=4.0.0, <4.0.15
>=4.2.0, <4.2.3
>=4.3.0, <4.3.3
3.6.18
4.0.15
4.2.3
4.3.3

Affected products

  • MongoDB Inc. MongoDB Server

Classification

Weakness
  • CWE-182 Collapse of Data into Unsafe Value
  • CWE-863 Incorrect Authorization
Technology feeds

References

Sources

Fencer Intel 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.