Public vulnerability disclosure

CVE-2026-120815

Incorrect Authorization Check in MongoDB Server Localhost Exception Leads to Unauthorized Administrative Access

publishedCWE-863

An incorrect authorization check in the MongoDB Server authorization subsystem may allow an unauthenticated party with local host access to obtain administrative privileges on a database server that has authorization enabled. This may result in unintended access to stored data and credentials, unintended modification of data, and loss of availability of the server.

Technical severity8.6 highCVSS 4.0 · CNA: mongodb
Published2026-11-10Source updated 2026-11-13
Collected2026-11-133 attributed sources

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
MongoDB Server
MongoDB
≥ 9.0.0; < 9.0.7 (affected, semver)
≥ 8.3.0; < 8.3.16 (affected, semver)
≥ 8.0.0; < 8.0.37 (affected, semver)
≥ 7.0.0; < 7.0.48 (affected, semver)
Other versions: unaffected
CNA: mongodb

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
4.0 / 8.6
high
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCNA: mongodb
3.1 / 8.4
high
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCNA: mongodb
4.0 / 8.6
high
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD: [email protected]
3.1 / 8.4
high
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD: [email protected]

Exploit evidence

References

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