CVE-2026-120567

LOW
INFO Priority: 0.00 BB Relevance: 55/100
Published: 2026-11-03 Modified: 2026-11-06 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: Present
VC: Low
VI: Low
VA: None

Description

The MongoDB Entity Framework Core provider does not neutralize special elements in values passed to SetProperty when an ExecuteUpdate call also contains a setter that reads the entity being updated. In that case the update is sent as an aggregation pipeline, and a caller-supplied string beginning with $ is evaluated as an expression rather than stored as data. A party who can influence such a value may modify or remove fields in the records being updated, or copy other fields of the same record into them.

References & Advisories (1)

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

2.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/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:X

EPSS — Exploitation Probability

0.15%
Raw Score 0.001500
Percentile 4.3%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00150
2026-11-13
0.00150
2026-11-12
0.00150
2026-11-10
0.00150
2026-11-09
0.00150
2026-11-08
0.00150
2026-11-07
0.00150
2026-11-06
0.00150
2026-11-05
0.00150
2026-11-04
0.00150

Intelligence Sources

mitre ref →
nvd ref →