Skip to content
Noroxi
CVE-2026-9101· NVD / CVE Program· CNA mongodb

Prototype pollution in csv parsing

Prototype pollution in csv parsing logic during import can lead to untrusted file paths (but not arguments) entering shell.openExternal after specific user behavior leading to "1-click" command execution.

MediumCVSS 5.3 · v4.0—No exploit No fix recorded
Published
May 20, 2026
Updated
Sep 24, 2026
EPSS
0.5% · 37th percentile
Follow this CVE

Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · mongodb
5.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Affected systems

VendorProduct
mongodbcompass

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mongodb compass1.36.3
  • mongodb compass1.36.4
  • mongodb compass1.37.0
  • mongodb compass1.38.0
  • mongodb compass1.38.1
  • mongodb compass1.38.2
  • mongodb compass1.39.0
  • mongodb compass1.39.1
  • mongodb compass1.39.2
  • mongodb compass1.39.3
  • mongodb compass1.39.4
  • mongodb compass1.40.0
  • mongodb compass1.40.1
  • mongodb compass1.40.2
  • mongodb compass1.40.3
  • mongodb compass1.40.4
  • mongodb compass1.41.0
  • mongodb compass1.42.0
  • mongodb compass1.42.1
  • mongodb compass1.42.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mongodb). Independent of NVD's CPE analysis and usually ahead of it.

  • MongoDB, Inc. Compass

    • 1.36.3, 1.36.4, 1.37.0, 1.38.0, 1.38.1, 1.38.2, 1.39.0, 1.39.1, 1.39.2, 1.39.3, 1.39.4, 1.40.0 … (+28)affected

Same product

mongodb: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-6376ejson shell parser in MongoDB Compass maybe bypassed
    39Monitor
  • CVE-2026-14881Compass connection import allows to override OIDC browser open command (usually set through settings), allowing for arbitrary shell commands execution when conn
    33Monitor
  • CVE-2025-1755MongoDB Compass may be susceptible to local privilege escalation in Windows
    31Monitor
  • CVE-2021-20334Local privilege escalation in MongoDB Compass for Windows
    31Monitor
  • CVE-2026-96750Shell script injection via server-supplied database name in Open MongoDB shell
    29Monitor
  • CVE-2024-3371Insufficient validation of external input in Compass may enable MITM attacks
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
P
Scope
X

Weakness class (CWE)

CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records