Exploited vulnerabilities / CVE-2026-59822
Confirmed exploited · authentication bypass · BerriAI LiteLLMCVE-2026-59822
BerriAI LiteLLM authentication bypass, confirmed exploited in the wild.
BerriAI LiteLLM contains an improper authentication vulnerability in the MCP Streamable HTTP endpoint that could allow an unauthenticated attacker to establish an authenticated MCP session using an arbitrary Bearer token.
| CISA's name for it | BerriAI LiteLLM Improper Authentication Vulnerability |
|---|---|
| Vendor and product | BerriAI · LiteLLM |
| Type | authentication bypass · CWE-287, CWE-306 |
| Exploited | Confirmed by CISA listed 2 September 2026 |
| Likelihood | scored lower by EPSS, but already confirmed exploited, which outranks any prediction |
| Deadline | 16 September 2026 · already passed |
| Used in ransomware | Not reported |
| Advisories | github.com ↗ · www.cisa.gov ↗ · www.cisa.gov ↗ · nvd.nist.gov ↗ |
Three steps, in this order
Apply the vendor fix and restart the affected service.
Put the login or management interface behind a VPN or allow-list; a bypass makes passwords irrelevant.
Rotate credentials and session keys the product holds, and review accounts and configuration changes since the listing date.
| CISA's required action | Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. |
|---|
Know before someone else finds it
Threat Landscape Monitoring fingerprints the software your internet-facing hosts disclose and matches it, every day, against this list and the exploitation scores. When a new entry touches something you run, you are told once, with the host and the fix. The free plan covers one domain.
CVE-2026-59822 in short
Is CVE-2026-59822 being exploited?
Yes. CISA added CVE-2026-59822 to its Known Exploited Vulnerabilities catalogue on 2 September 2026, which it does only on evidence of exploitation in the wild.
What is the CISA deadline for CVE-2026-59822?
US federal agencies must remediate it by 16 September 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.
How likely is CVE-2026-59822 to be exploited in the next 30 days?
FIRST's Exploit Prediction Scoring System gives it 0.8%, the 58th percentile of every CVE it scores.
How do I fix CVE-2026-59822?
Apply the vendor fix and restart the affected service. Put the login or management interface behind a VPN or allow-list; a bypass makes passwords irrelevant. Rotate credentials and session keys the product holds, and review accounts and configuration changes since the listing date.
Other BerriAI vulnerabilities being exploited
| CVE | Product | Type | Listed |
|---|---|---|---|
| CVE-2026-42271 | LiteLLM | command injection | 8 June 2026 |
| CVE-2026-42208 | LiteLLM | SQL injection | 8 May 2026 |
Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.