CVE-2026-39321

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Source
https://cve.org/CVERecord?id=CVE-2026-39321
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39321.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-39321
Aliases
Published
2026-04-07T18:11:10.514Z
Modified
2026-07-08T08:13:02.171533821Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Parse Server has a login timing side-channel reveals user existence
Details

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.8.0-alpha.6 and 8.6.74, he login endpoint response time differs measurably depending on whether the submitted username or email exists in the database. When a user is not found, the server responds immediately. When a user exists but the password is wrong, a bcrypt comparison runs first, adding significant latency. This timing difference allows an unauthenticated attacker to enumerate valid usernames. This vulnerability is fixed in 9.8.0-alpha.6 and 8.6.74.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39321.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-208"
    ]
}
References

Affected packages

Git / github.com/parse-community/parse-server

Affected ranges

Type
GIT
Repo
https://github.com/parse-community/parse-server
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4b6966106f83cda4d074135a85236622d84777d1
Introduced
532a461d30a6ed4457839f2caf5f30d5abf51a55
Fixed
7c3b43d2633cfe96a5bd1e853b84fa34846a03bd
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "8.6.74"
        },
        {
            "introduced": "9.0.0"
        },
        {
            "fixed": "9.8.0"
        }
    ]
}

Affected versions

2.*
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.2.0
2.2.1
2.2.10
2.2.11
2.2.12
2.2.13
2.2.14
2.2.15
2.2.16
2.2.17
2.2.18
2.2.19
2.2.2
2.2.20
2.2.21
2.2.22
2.2.23
2.2.24
2.2.25
2.2.25-beta.1
2.2.3
2.2.4
2.2.5
2.2.6
2.2.7
2.2.8
2.2.9
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8
2.4.0
2.4.1
2.4.2
2.5.0
2.5.1
2.5.2
2.5.3
2.6.0
2.6.1
2.6.2
2.6.3
2.6.4
2.6.5
2.7.0
2.7.1
2.7.2
2.7.3
2.7.4
2.8.0
2.8.2
3.*
3.0.0
3.1.0
3.1.1
3.1.2
3.1.3
3.10.0
3.2.0
3.2.1
3.2.2
3.2.3
3.3.0
3.4.0
3.4.1
3.5.0
3.6.0
3.7.0
3.7.1
3.7.2
3.8.0
3.9.0
4.*
4.0.0
4.0.1
4.0.2
4.1.0
4.2.0
4.3.0
4.4.0
4.5.0
5.*
5.0.0
5.0.0-alpha.1
5.1.0
5.1.1
5.2.0
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.3.0
5.3.1
5.3.2
5.3.3
5.4.0
6.*
6.0.0
6.1.0
6.2.0
6.2.1
6.2.2
6.3.0
6.3.1
6.4.0
7.*
7.0.0
7.1.0
7.2.0
7.3.0
7.4.0
8.*
8.0.0
8.0.1
8.0.2
8.1.0
8.2.0
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.3.0
8.4.0
8.5.0
8.6.0
8.6.1
8.6.10
8.6.11
8.6.12
8.6.13
8.6.14
8.6.15
8.6.16
8.6.17
8.6.18
8.6.19
8.6.2
8.6.20
8.6.21
8.6.22
8.6.23
8.6.24
8.6.25
8.6.26
8.6.27
8.6.28
8.6.29
8.6.3
8.6.30
8.6.31
8.6.32
8.6.33
8.6.34
8.6.35
8.6.36
8.6.37
8.6.38
8.6.39
8.6.4
8.6.40
8.6.41
8.6.42
8.6.43
8.6.44
8.6.45
8.6.46
8.6.47
8.6.48
8.6.49
8.6.5
8.6.50
8.6.51
8.6.52
8.6.53
8.6.54
8.6.55
8.6.56
8.6.57
8.6.58
8.6.59
8.6.6
8.6.60
8.6.61
8.6.62
8.6.63
8.6.64
8.6.65
8.6.66
8.6.67
8.6.68
8.6.69
8.6.7
8.6.70
8.6.71
8.6.72
8.6.73
8.6.8
8.6.9
9.*
9.0.0
9.1.0
9.1.1
9.2.0
9.3.0
9.3.1
9.4.0
9.4.1
9.5.0
9.5.1
9.6.0
9.6.1
9.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39321.json"