CVE-2025-1691Network attack vector

Command execution via unescaped autocomplete control characters

Published Feb 27, 2025 · Updated Feb 27, 2025

Control-character injection in MongoDB Shell before 2.3.9 allows attackers to execute obfuscated commands through autocomplete. The cli-repl formatting path printed server-derived control characters directly, allowing crafted completion text to conceal input before execution. Exploitation requires a partially or fully attacker-controlled cluster and a user who presses Tab on a matching prefix; resulting commands run in that user's shell session.

CVSS severity7.6
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Control-character injection in MongoDB Shell before 2.3.9 allows attackers to execute obfuscated commands through autocomplete. The cli-repl formatting path printed server-derived control characters directly, allowing crafted completion text to conceal input before execution. Exploitation requires a partially or fully attacker-controlled cluster and a user who presses Tab on a matching prefix; resulting commands run in that user's shell session.

The record

CVE
CVE-2025-1691
Published
Feb 27, 2025
Updated
Feb 27, 2025
Vendor
MongoDB
Product
MongoDB Shell
Classifications
CWE-74, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.3.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

MongoDB · MongoDB Shellversion=0 <2.3.9

Published CVSS scores

7.6MongoDB, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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