CVE-2026-59821
LOW 2.1 ALL-YEARSLiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.82.0-stable, LiteLLM's Custom Code Guardrails production create and update paths did not apply the same sandboxing and validation used by the test endpoint, allowing a privileged user with access to create or update guardrails to submit custom Python code that executed in the LiteLLM proxy environment and could expose secrets available to the process. This issue is fixed in version 1.82.0-stable.
VulnCheck KEV reports exploitation for this CVE. These are source-specific reports; review the details and vendor guidance below.
Exploitation likelihood
0.9%chance of exploitation in 30 days · 60th percentile
Impact if exploited
2.1CVSS 4.0 · LOW · CNA
- ConfidentialityLow
- IntegrityLow
- AvailabilityLow
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ⚠Privileges: Requires an admin / high-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ⚠Requirements: Specific conditions must be present
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
Search GitHub now — results may be empty or unverified.
Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Weakness (CWE)
- CWE-94: : Improper Control of Generation of Code ('Code Injection')
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
References and research data (JSON)
Packages and version ranges
Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.
litellm PyPI
pkg:pypi/litellm
ECOSYSTEM range- All earlier versions (introduced 0)
- Fixed boundary (excluded): 1.82.0
720 explicitly listed affected versions
0.1.0, 0.1.1, 0.1.2, 0.1.201, 0.1.202, 0.1.203, 0.1.204, 0.1.205, 0.1.206, 0.1.207, 0.1.208, 0.1.209, 0.1.210, 0.1.211, 0.1.212, 0.1.213, 0.1.214, 0.1.215, 0.1.216, 0.1.217, 0.1.218, 0.1.219, 0.1.220, 0.1.221, 0.1.222, 0.1.223, 0.1.224, 0.1.225, 0.1.226, 0.1.227, 0.1.228, 0.1.229, 0.1.2291, 0.1.230, 0.1.231, 0.1.232, 0.1.233, 0.1.234, 0.1.235, 0.1.236, 0.1.237, 0.1.238, 0.1.3, 0.1.31, 0.1.32, 0.1.330, 0.1.331, 0.1.34, 0.1.341, 0.1.343, 0.1.345, 0.1.347, 0.1.348, 0.1.349, 0.1.351, 0.1.352, 0.1.353, 0.1.354, 0.1.356, 0.1.360, 0.1.361, 0.1.362, 0.1.363, 0.1.364, 0.1.365, 0.1.366, 0.1.367, 0.1.368, 0.1.369, 0.1.370, 0.1.371, 0.1.372, 0.1.373, 0.1.375, 0.1.376, 0.1.379, 0.1.380, 0.1.381, 0.1.383, 0.1.384, 0.1.385, 0.1.386, 0.1.387, 0.1.388, 0.1.389, 0.1.392, 0.1.393, 0.1.394, 0.1.398, 0.1.399, 0.1.400, 0.1.401, 0.1.402, 0.1.403, 0.1.404, 0.1.405, 0.1.410, 0.1.411, 0.1.412, 0.1.415, 0.1.419, 0.1.420, 0.1.421, 0.1.422, 0.1.424, 0.1.425, 0.1.426, 0.1.429, 0.1.433, 0.1.434, 0.1.435, 0.1.436, 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1.54.0, 1.54.1, 1.55.0, 1.55.1, 1.55.10, 1.55.11, 1.55.12, 1.55.2, 1.55.3, 1.55.4, 1.55.6, 1.55.7, 1.55.8, 1.55.9, 1.56.10, 1.56.2, 1.56.3, 1.56.4, 1.56.5, 1.56.6, 1.56.8, 1.56.8.dev4, 1.56.8.dev5, 1.56.8.dev6, 1.56.8.dev7, 1.56.9, 1.57.0, 1.57.1, 1.57.10, 1.57.11, 1.57.2, 1.57.3, 1.57.4, 1.57.5, 1.57.7, 1.57.7.dev1, 1.57.8, 1.58.0, 1.58.1, 1.58.2, 1.58.4, 1.59.0, 1.59.1, 1.59.1.dev1, 1.59.10, 1.59.10.dev1, 1.59.12, 1.59.2, 1.59.3, 1.59.5, 1.59.6, 1.59.7, 1.59.8, 1.59.9, 1.6.0, 1.60.0, 1.60.2, 1.60.4, 1.60.5, 1.60.6, 1.60.7, 1.60.8, 1.60.9, 1.61.0, 1.61.0.dev1, 1.61.1, 1.61.11, 1.61.13, 1.61.15, 1.61.16, 1.61.17, 1.61.19, 1.61.2, 1.61.20, 1.61.3, 1.61.4, 1.61.5, 1.61.6, 1.61.7, 1.61.8, 1.61.9, 1.62.1, 1.62.4, 1.63.0, 1.63.0.dev12, 1.63.11, 1.63.11.dev1, 1.63.12, 1.63.14, 1.63.2, 1.63.3, 1.63.4.dev1, 1.63.5, 1.63.6, 1.63.7, 1.63.8, 1.64.1, 1.65.0, 1.65.0.post1, 1.65.1, 1.65.3, 1.65.4, 1.65.4.post1, 1.65.5, 1.65.6, 1.65.7, 1.65.8, 1.66.0, 1.66.1, 1.66.2, 1.66.3, 1.67.0, 1.67.0.post1, 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1.76.0, 1.76.1, 1.76.2, 1.76.3, 1.77.0, 1.77.1, 1.77.2.post1, 1.77.3, 1.77.4, 1.77.4.dev1, 1.77.5, 1.77.7, 1.78.0, 1.78.0rc2, 1.78.2, 1.78.3, 1.78.4, 1.78.5, 1.78.6, 1.78.7, 1.79.0, 1.79.0.dev1, 1.79.0.dev2, 1.79.0.dev3, 1.79.1, 1.79.2, 1.79.3, 1.79.3.dev8, 1.8.1, 1.80.0, 1.80.10, 1.80.11, 1.80.12, 1.80.13, 1.80.15, 1.80.16, 1.80.17, 1.80.5, 1.80.6, 1.80.7, 1.80.8, 1.80.9, 1.81.0, 1.81.1, 1.81.10, 1.81.11, 1.81.12, 1.81.13, 1.81.14, 1.81.15, 1.81.16, 1.81.3, 1.81.4, 1.81.5, 1.81.6, 1.81.7, 1.81.8, 1.81.9, 1.81.9.dev1, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.dev0
GitHub Advisory Database · GHSA-72m8-9m7m-h278 · Updated 2026-09-10T03:51:10.829513778ZAdditional upstream package constraints
{ "database": { "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-72m8-9m7m-h278/GHSA-72m8-9m7m-h278.json" } }litellm PyPI
pkg:pypi/litellm
ECOSYSTEM range- All earlier versions (introduced 0)
- Fixed boundary (excluded): 1.82.0
1094 explicitly listed affected versions
0.1.0, 0.1.1, 0.1.2, 0.1.201, 0.1.202, 0.1.203, 0.1.204, 0.1.205, 0.1.206, 0.1.207, 0.1.208, 0.1.209, 0.1.210, 0.1.211, 0.1.212, 0.1.213, 0.1.214, 0.1.215, 0.1.216, 0.1.217, 0.1.218, 0.1.219, 0.1.220, 0.1.221, 0.1.222, 0.1.223, 0.1.224, 0.1.225, 0.1.226, 0.1.227, 0.1.228, 0.1.229, 0.1.2291, 0.1.230, 0.1.231, 0.1.232, 0.1.233, 0.1.234, 0.1.235, 0.1.236, 0.1.237, 0.1.238, 0.1.3, 0.1.31, 0.1.32, 0.1.330, 0.1.331, 0.1.34, 0.1.341, 0.1.343, 0.1.345, 0.1.347, 0.1.348, 0.1.349, 0.1.351, 0.1.352, 0.1.353, 0.1.354, 0.1.356, 0.1.360, 0.1.361, 0.1.362, 0.1.363, 0.1.364, 0.1.365, 0.1.366, 0.1.367, 0.1.368, 0.1.369, 0.1.370, 0.1.371, 0.1.372, 0.1.373, 0.1.375, 0.1.376, 0.1.379, 0.1.380, 0.1.381, 0.1.383, 0.1.384, 0.1.385, 0.1.386, 0.1.387, 0.1.388, 0.1.389, 0.1.392, 0.1.393, 0.1.394, 0.1.398, 0.1.399, 0.1.400, 0.1.401, 0.1.402, 0.1.403, 0.1.404, 0.1.405, 0.1.410, 0.1.411, 0.1.412, 0.1.415, 0.1.419, 0.1.420, 0.1.421, 0.1.422, 0.1.424, 0.1.425, 0.1.426, 0.1.429, 0.1.433, 0.1.434, 0.1.435, 0.1.436, 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PyPA · PYSEC-2026-3478 · Updated 2026-07-23T15:00:14.016159175ZAdditional upstream package constraints
{ "database": { "source": "https://github.com/pypa/advisory-database/blob/main/vulns/litellm/PYSEC-2026-3478.yaml" } }
Vendor product assessments
exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 as a component of Exploit Intelligence · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:oci/vulnerability-analysis-rhel9?repository_url=registry.redhat.io/exploit-intelligence-tech-preview/vulnerability-analysis-rhel9
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00lightspeed-core/lightspeed-stack-rhel9 as a component of Lightspeed Core · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:oci/lightspeed-stack-rhel9?repository_url=registry.redhat.io/lightspeed-core/lightspeed-stack-rhel9
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00ansible-automation-platform-26/lightspeed-chatbot-rhel9 as a component of Red Hat Ansible Automation Platform 2 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:oci/lightspeed-chatbot-rhel9?repository_url=registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00ansible-automation-platform-27/lightspeed-chatbot-rhel9 as a component of Red Hat Ansible Automation Platform 2 · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:oci/lightspeed-chatbot-rhel9?repository_url=registry.redhat.io/ansible-automation-platform-27/lightspeed-chatbot-rhel9
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00rhoai/odh-llama-stack-core-rhel9 as a component of Red Hat OpenShift AI (RHOAI) · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:oci/odh-llama-stack-core-rhel9?repository_url=registry.redhat.io/rhoai/odh-llama-stack-core-rhel9
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00rhoai/odh-mlflow-rhel9 as a component of Red Hat OpenShift AI (RHOAI) · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:oci/odh-mlflow-rhel9?repository_url=registry.redhat.io/rhoai/odh-mlflow-rhel9
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9 as a component of Red Hat OpenShift AI (RHOAI) · known not affected
Vendor assessment for this product only.
Reason: vulnerable code not present
pkg:oci/odh-trustyai-garak-lls-provider-dsp-rhel9?repository_url=registry.redhat.io/rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00
Additional exploitation reports
Source-specific reports, separate from CISA KEV. Repeated observations from one source are not independent confirmations.
- VulnCheck KEV · 2026-07-26T00:00:00Z
Source guidance: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Source ransomware assessment: Unknown
VulnCheck KEV · CVE-2026-59821 · Updated 2026-07-26T00:00:00Z - VulnCheck KEV · 2026-07-26T00:00:00ZVulnCheck KEV · CVE-2026-59821
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Litellm | Litellm | < 1.82.0 |
| Litellm | Litellm | 1.82.0 |
All CVSS metrics
- LOW 2.1 v4.0 · CNA Primary
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N - LOW 2.1 v4.0 · NVD Secondary
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - HIGH 7.2 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
References
Patches & mitigations
- https://github.com/BerriAI/litellm/security/advisories/GHSA-72m8-9m7m-h278 CVE record · GitHub_M · Updated 2026-07-08T19:14:13.265Z
NVD · CVE-2026-59821 · Updated 2026-10-25T17:10:00.197
GitHub Advisory Database · GHSA-72m8-9m7m-h278
PyPA · PYSEC-2026-3478
GitHub Advisory Database · GHSA-72m8-9m7m-h278 · Updated 2026-09-10T03:51:10.829513778Z
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00 - https://github.com/BerriAI/litellm/commit/e50b4486d0f7aa0497185a1ebcdd2c91f1769eba CVE record · GitHub_M · Updated 2026-07-08T19:14:13.265Z
NVD · CVE-2026-59821 · Updated 2026-10-25T17:10:00.197
GitHub Advisory Database · GHSA-72m8-9m7m-h278
PyPA · PYSEC-2026-3478
GitHub Advisory Database · GHSA-72m8-9m7m-h278 · Updated 2026-09-10T03:51:10.829513778Z
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00
Advisories
- https://osv.dev/vulnerability/GHSA-72m8-9m7m-h278 GitHub Advisory Database · GHSA-72m8-9m7m-h278
GitHub Advisory Database · GHSA-72m8-9m7m-h278 · Updated 2026-09-10T03:51:10.829513778Z - https://nvd.nist.gov/vuln/detail/CVE-2026-59821 GitHub Advisory Database · GHSA-72m8-9m7m-h278
PyPA · PYSEC-2026-3478
GitHub Advisory Database · GHSA-72m8-9m7m-h278 · Updated 2026-09-10T03:51:10.829513778Z
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00 - https://osv.dev/vulnerability/PYSEC-2026-3478 PyPA · PYSEC-2026-3478
PyPA · PYSEC-2026-3478 · Updated 2026-07-23T15:00:14.016159175Z - https://github.com/advisories/GHSA-72m8-9m7m-h278 PyPA · PYSEC-2026-3478
PyPA · PYSEC-2026-3478 · Updated 2026-07-23T15:00:14.016159175Z - https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59821.json Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42350 EUVD · EUVD-2026-42350
- https://vulncheck.com/kev VulnCheck KEV · CVE-2026-59821 · Updated 2026-07-26T00:00:00Z
Technical & other
- https://github.com/BerriAI/litellm/releases/tag/v1.82.0-stable CVE record · GitHub_M · Updated 2026-07-08T19:14:13.265Z
NVD · CVE-2026-59821 · Updated 2026-10-25T17:10:00.197
GitHub Advisory Database · GHSA-72m8-9m7m-h278
PyPA · PYSEC-2026-3478
GitHub Advisory Database · GHSA-72m8-9m7m-h278 · Updated 2026-09-10T03:51:10.829513778Z
Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00 - https://github.com/BerriAI/litellm GitHub Advisory Database · GHSA-72m8-9m7m-h278
PyPA · PYSEC-2026-3478
GitHub Advisory Database · GHSA-72m8-9m7m-h278 · Updated 2026-09-10T03:51:10.829513778Z - https://pypi.org/project/litellm PyPA · PYSEC-2026-3478
PyPA · PYSEC-2026-3478 · Updated 2026-07-23T15:00:14.016159175Z - https://access.redhat.com/security/cve/CVE-2026-59821 Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00
- https://bugzilla.redhat.com/show_bug.cgi?id=2498202 Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00
- https://www.cve.org/CVERecord?id=CVE-2026-59821 Red Hat · CVE-2026-59821 · Updated 2026-07-13T13:56:31+00:00
- https://www.linkedin.com/posts/yaarashriki_cve-2026-59821-cve-2026-59822-i-found-activity-7487129774184632320-TvsW/ VulnCheck KEV · CVE-2026-59821 · Updated 2026-07-26T00:00:00Z
Sources: NVD · CVE.org · All sources and attribution · EPSS