Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-7921
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:26 UTC · Revision 1
Source evidence
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.
osv:CVE-2020-7921
Complete source record
{
"id": "f08aed7109277456f47b0db2df23228c92e2677dbf66311b0519f26ee6718247",
"url": "https://osv.dev/vulnerability/CVE-2020-7921",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-7921",
"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.",
"evidence": "osv:CVE-2020-7921",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-7921",
"aliases": [
"BIT-mongodb-2020-7921",
"CVE-2020-7921"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
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"type": "GIT",
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"r4.0.0",
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"r3.6.4",
"r3.6.3-rc1",
"r3.6.3",
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"r3.6.2-rc0",
"r3.6.2",
"r3.6.1-rc1",
"r3.6.1",
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],
"database_specific": {
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"vanir_signatures": [
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"digest": {
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"target": {
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{
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"modified": "2026-10-24T14:24:35.031517811Z",
"provider": "osv",
"references": [
"https://jira.mongodb.org/browse/SERVER-45472"
],
"provider_metadata": {
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"related_cves": [
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"source_id": "core-osv",
"document_id": 443704,
"published_at": "2020-05-06T15:15:11.88+00:00"
}