How severe is CVE-2025-1691?

CVE-2025-1691 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-1691 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-1691?

CVE-2025-1691 affects Mongodb Mongosh. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-1691?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-1691 have an EU (EUVD) identifier?

Yes. CVE-2025-1691 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5466.

When was CVE-2025-1691 published?

CVE-2025-1691 was published on 2025-02-27 and last updated on 2026-06-17.

CVE-2025-1691

CVE-2025-1691 is a high-severity vulnerability in Mongodb Mongosh with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5466
Weakness: CWE-74
Affected product: Mongodb Mongosh
Published: 2025-02-27
Last modified: 2026-06-17

Description

The MongoDB Shell may be susceptible to control character injection where an attacker with control of the mongosh autocomplete feature, can use the autocompletion feature to input and run obfuscated malicious text. This requires user interaction in the form of the user using ‘tab’ to autocomplete text that is a prefix of the attacker’s prepared autocompletion. This issue affects mongosh versions prior to 2.3.9. The vulnerability is exploitable only when mongosh is connected to a cluster that is partially or fully controlled by an attacker.

Frequently asked questions

What is CVE-2025-1691?: The MongoDB Shell may be susceptible to control character injection where an attacker with control of the mongosh autocomplete feature, can use the autocompletion feature to input and run obfuscated malicious text. This requires user interaction in the form of the user using ‘tab’ to autocomplete text that is a prefix of the attacker’s prepared autocompletion. This issue affects mongosh versions prior to 2.3.9. The vulnerability is exploitable only when mongosh is connected to a cluster that is partially or fully controlled by an attacker.
How severe is CVE-2025-1691?: CVE-2025-1691 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-1691 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-1691?: CVE-2025-1691 affects Mongodb Mongosh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-1691?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-1691 have an EU (EUVD) identifier?: Yes. CVE-2025-1691 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5466.
When was CVE-2025-1691 published?: CVE-2025-1691 was published on 2025-02-27 and last updated on 2026-06-17.

References

https://jira.mongodb.org/browse/MONGOSH-2024

Affected products (1)

cpe:2.3:a:mongodb:mongosh:*:*:*:*:*:*:*:*

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