CVE-2020-7921: mongodb inc mongodb server Collapse of Data into Unsafe Value
Vulnerability summary
CVE-2020-7921 is a medium (CVSS 5.3) Collapse of Data into Unsafe Value vulnerability in mongodb inc mongodb server. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.8% of scored vulnerabilities.
Timeline
- 06-05-2020PublishedVulnerability first disclosed.
- 18-11-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versions- CVE.orgCNA4.6MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.66%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
0.00 pp
From 0.66% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-182Collapse of Data into Unsafe ValueThe product filters data in a way that causes it to be reduced or "collapsed" into an unsafe value that violates an expected security property.
- CWE-863Incorrect AuthorizationThe product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Affected systems
Mongodb1 product
- 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
Mongodb inc1 product
- mongodb server≥ 4.2, < 4.2.3 | ≥ 4.0, < 4.0.15 | ≥ 3.6, < 3.6.18 | ≥ 4.3, < 4.3.3
Ubuntu1 product
- mongodbAll versions (No fix recorded)
3 vendors · 3 products