Application denial of service and data truncation via unchecked BSON append failures in MongoDB PHP Driver (MongoDB PHP Driver)

CVE-2026-106436
MEDIUM 6.3

At a glance

Source
NVD
EPSS
EPSS 0.26 % Β· percentile 17 ()
State
PUBLISHED
Published
Updated
Assigner
mongodb
NVD status
Analyzed

Description

The BSON encoder in the MongoDB PHP Driver does not check some return values after a document exceeds libbson's size limit. This can leave the encoder in an invalid state. An unauthenticated actor who can cause an affected application to encode an unusually large data structure can terminate the PHP worker or cause the resulting document to omit fields. No MongoDB server connection or database authentication is required.

Weaknesses (CWE)

  • CWE-252 β€” Unchecked Return Value

References

Scores

VersionScoreVectorScored by
CVSS 4.0MEDIUM 6.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:Nmongodb
CVSS 3.1MEDIUM 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:Lmongodb
CVSS 4.0MEDIUM 6.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/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 Β· cna@mongodb.com (Secondary)
CVSS 3.1MEDIUM 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:LNVD Β· cna@mongodb.com (Secondary)
CVSS 3.1MEDIUM 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:LNVD Β· nvd@nist.gov (Primary)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
MongoDB Β· PHP Driveraffected 1.3.0 < 1.21.11 ; affected 2.0.0 < 2.1.11 ; affected 2.2.0 < 2.5.4

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST β€” attribution requested
ENISA EUVDENISA β€” reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain β€” this product uses data from the NVD API but is not endorsed or certified by the NVD