CVE-2026-59822 — BerriAI LiteLLM Improper Authentication Vulnerability

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

• Documented patch — github.com (NIST National Vulnerability Database)
• Documented patch — github.com (NIST National Vulnerability Database)
• Documented patch — github.com (NIST National Vulnerability Database)
• Pip Litellm: fixed in version 1.84.0 — github.com (GitHub Security Advisories)

CISA required action CISA

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.

US federal deadline: Sep 16, 2026 — passed 29 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (BerriAI Litellm, Litellm Litellm, Pip Litellm).
2. Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
3. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
4. Apply the fixed version or the patch documented under Remediation.
5. Search available logs for exploit probes matching the vulnerability class (authentication), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-287 · Improper Authentication

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

EPSS over time FIRST

Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 0.84%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
• Review authentication logs: logins without MFA, anomalous sessions and recently created accounts.
• Hunt retroactively in logs from before Sep 2, 2026 (KEV listing): exploitation may have started earlier.

Timeline

What happened to this CVE, newest first.

• 2026
• Fix documented
  Oct 13, 2026 · NIST National Vulnerability Database
• Affected products added · litellm/litellm
  Oct 13, 2026 · NIST National Vulnerability Database
• CVSS changed · 8.8 → 8.2
  Oct 13, 2026 · NIST National Vulnerability Database
• Source status changed · Published → Analyzed
  Oct 13, 2026 · NIST National Vulnerability Database
• Fix documented
  Oct 13, 2026 · GitHub Security Advisories
• Affected products added · pip/litellm
  Oct 13, 2026 · GitHub Security Advisories
• Record published
  Oct 13, 2026
• Affected products added · berriai/litellm
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• CVSS changed · 8.8
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• Source status changed · → Published
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• SSVC assessment updated
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• Added to CISA KEV (detected)
  Oct 13, 2026 · CISA Known Exploited Vulnerabilities
• Record created in this database
  Oct 13, 2026 · CISA Known Exploited Vulnerabilities
• Added to CISA KEV catalog
  Sep 1, 2026 · CISA
• CVE published
  Jul 8, 2026 · GitHub_M

Source activity

Repeated readings are counted rather than listed.

• 3× References added · Oct 13, 2026 – Oct 13, 2026
• 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

8 on the record

• github.com/BerriAI/litellm/commit/73869f0faf7d11ee21adcb5f91b8c33a340b6c2c
  x_refsource_MISC, Patch, CVE Program (cve.org) e CISA ADP
• github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q
  x_refsource_CONFIRM, Mitigation, Patch, Vendor Advisory, CVE Program (cve.org) e CISA ADP
• github.com/BerriAI/litellm/pull/26463
  x_refsource_MISC, Issue Tracking, Patch, CVE Program (cve.org) e CISA ADP
• www.cisa.gov/known-exploited-vulnerabilities-catalog
  US Government Resource, NIST National Vulnerability Database
• www.wiz.io/blog/ai-infrastructure-honeypot
  Third Party Advisory, NIST National Vulnerability Database
• nvd.nist.gov/vuln/detail/CVE-2026-59822
  GitHub Security Advisories
• github.com/advisories/GHSA-7488-6r32-c95q
  GitHub Security Advisories
• github.com/BerriAI/litellm/releases/tag/v1.84.0
  x_refsource_MISC, Product, Release Notes, CVE Program (cve.org) e CISA ADP

Elsewhere on this site

Related CVEs (same products)

• Medium CVE-2026-108575 BerriAI LiteLLM Secret Resolution main.py get_secret improper authorization 4d
• Medium CVE-2026-108574 BerriAI LiteLLM Spend Tracking spend_management_endpoints.py ui_view_session_spend_logs authorization 4d
• Medium CVE-2026-59819 LiteLLM: Local file read via request-supplied OIDC file references Jul 8, 2026
• Medium CVE-2026-59820 LiteLLM: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') Jul 8, 2026
• High CVE-2026-59821 LiteLLM: Custom Code Guardrails production endpoints bypass code safety checks Jul 8, 2026
• Critical CVE-2026-49468 LiteLLM Proxy: authentication bypass via Host header spoofing (CVE-2026-49468) Jun 22, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-59822 is "BerriAI LiteLLM Improper Authentication Vulnerability", rated High. It affects Litellm (BerriAI); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 8.2 describes technical severity. EPSS 0.84% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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