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Exploited vulnerability · CISA KEV

Is CVE-2026-42271 exploited? Yes: in CISA KEV since 8 Jun 2026

Gociux · BerriAI LiteLLM · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2026-42271, BerriAI LiteLLM Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 8 Jun 2026, 31 days after it was published. It affects BerriAI LiteLLM. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 8 Jun 2026
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity8.8CVSS 3.1 · high
US federal due22 Jun 2026BOD 22-01 deadline

What it is

BerriAI LiteLLM contains a command injection vulnerability that could allow any authenticated user, including holders of low-privilege internal-user keys, to run arbitrary commands on the host.

VendorBerriAI (3 exploited CVEs in KEV)
ProductLiteLLM
VulnerabilityBerriAI LiteLLM Command Injection Vulnerability
WeaknessCWE-78, CWE-77
Published8 May 2026
Added to KEV8 Jun 2026
Reported by (CNA)GitHub_M

What to do

  1. Check whether you run it. Look for LiteLLM in your asset inventory, including appliances and cloud images. Stack check lists every exploited BerriAI CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 8 May 2026.
  4. Get told next time. Email alerts when CISA adds a CVE for BerriAI.

Other exploited CVEs in LiteLLM

References

Questions

Is CVE-2026-42271 being exploited?

Yes. CISA added CVE-2026-42271 to the Known Exploited Vulnerabilities catalog on 8 Jun 2026, which means there is reliable evidence of exploitation in the wild.

Is CVE-2026-42271 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2026-42271?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check BerriAI's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected LiteLLM and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in June 2026 · BerriAI scorecard · act-now radar.

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