CVE-2026-49468

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 58% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0, This vulnerability is fixed in 1.84.0.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
42.5%
KEV
Not listed

Published

June 16, 2026

Last Modified

June 30, 2026

Advisory Details (5)

Auto-updated Jun 30, 2026
Patch available. Sources: github_release, github, redhat.
redhat
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49468.json
redhat

2491520 – (CVE-2026-49468) CVE-2026-49468 litellm: LiteLLM: Authentication Bypass via Host Header Injection

https://bugzilla.redhat.com/show_bug.cgi?id=2491520
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-49468
github Patch Available

Authentication Bypass via Host Header Injection · Advisory · BerriAI/litellm · GitHub

https://github.com/BerriAI/litellm/security/advisories/GHSA-4xpc-pv4p-pm3w
github_release Patch Available

v1.84.0

Patch available: BerriAI/litellm v1.84.0

https://github.com/BerriAI/litellm/releases/tag/v1.84.0

Vendor Advisories for CVE-2026-49468(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
litellm0.1.0 ... 1.9.dev0 (1119 versions)1.84.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 45× in last 7d / 104× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 104 total refreshes for this CVE.

  1. 2026-07-07 02:49 UTCEG score recompute
  2. 2026-07-06 22:55 UTCEG score recompute
  3. 2026-07-06 16:27 UTCEPSS rescore
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  1. 2026-07-02 20:59 UTCEG score recompute
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  14. 2026-06-30 23:54 UTCEG score recompute
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  24. 2026-06-29 14:06 UTCEPSS rescore
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  26. 2026-06-29 13:58 UTCEG score recompute
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  40. 2026-06-27 21:11 UTCEG score recompute
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  56. 2026-06-25 13:49 UTCEPSS rescore
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  60. 2026-06-24 23:38 UTCEG score recompute▲ 0.30
  61. 2026-06-24 20:03 UTCNVD updateCVSS v3 → 9.8
  62. 2026-06-24 19:55 UTCEG score recompute
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  69. 2026-06-23 21:33 UTCEPSS rescore
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  71. 2026-06-23 20:22 UTCEG score recompute
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  74. 2026-06-23 09:00 UTCEG score recompute
  75. 2026-06-23 05:17 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-49468?
CVE-2026-49468 is a critical vulnerability published on June 16, 2026. LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0, This vulnerability is fixed in 1.84.0.
When was CVE-2026-49468 disclosed?
CVE-2026-49468 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49468 actively exploited?
CVE-2026-49468 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 42.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-49468?
CVE-2026-49468 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-49468?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49468, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-49468

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