How severe is CVE-2026-22252?

CVE-2026-22252 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-22252 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22252?

CVE-2026-22252 affects Librechat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22252?

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

Does CVE-2026-22252 have an EU (EUVD) identifier?

Yes. CVE-2026-22252 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2008.

When was CVE-2026-22252 published?

CVE-2026-22252 was published on 2026-01-12 and last updated on 2026-06-17.

CVE-2026-22252

CVE-2026-22252 is a critical-severity vulnerability in Librechat with a CVSS 3.x base score of 9.1. 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-285.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2008
Weakness: CWE-285
Affected product: Librechat
Published: 2026-01-12
Last modified: 2026-06-17

Description

LibreChat is a ChatGPT clone with additional features. Prior to v0.8.2-rc2, LibreChat's MCP stdio transport accepts arbitrary commands without validation, allowing any authenticated user to execute shell commands as root inside the container through a single API request. This vulnerability is fixed in v0.8.2-rc2.

Frequently asked questions

What is CVE-2026-22252?: LibreChat is a ChatGPT clone with additional features. Prior to v0.8.2-rc2, LibreChat's MCP stdio transport accepts arbitrary commands without validation, allowing any authenticated user to execute shell commands as root inside the container through a single API request. This vulnerability is fixed in v0.8.2-rc2.
How severe is CVE-2026-22252?: CVE-2026-22252 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-22252 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22252?: CVE-2026-22252 affects Librechat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22252?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-22252 have an EU (EUVD) identifier?: Yes. CVE-2026-22252 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2008.
When was CVE-2026-22252 published?: CVE-2026-22252 was published on 2026-01-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:librechat:librechat:0.8.2:rc1:*:*:*:*:*:*

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