CVE-2026-40217

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 3.4% (88th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 3.4%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
3.4%
EPSS %ILE
88th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

April 10, 2026

Last Modified

July 15, 2026

Advisory Details (1)

Auto-updated May 2, 2026
Patch available.
Web page

Advisory X41-2026-001: Guardrail Sandbox Escape in LiteLLM | X41 D-Sec - Penetration Tests and Source Code Audits

https://www.x41-dsec.de/lab/advisories/x41-2026-001-litellm/

Vendor Advisories for CVE-2026-40217(2)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhoai/odh-llama-stack-core-rhel9:17823100082026-06-25redhat
redhatansible-automation-platform-26/lightspeed-chatbot-rhel9:17801027322026-06-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
litellm1.81.10 ... 1.83.9 (27 versions)
  • 1.81.8 up to 1.83.10: fixed in 1.83.10
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 25× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 191 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 93 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 16:42 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  2. 2026-10-15 16:32 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  3. 2026-10-14 16:32 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  4. 2026-10-13 16:34 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  6. 2026-10-12 16:09 UTCEG score recompute
  7. 2026-10-11 19:52 UTCEG score recompute
  8. 2026-10-11 17:05 UTCEG score recompute
  9. 2026-10-11 14:31 UTCEG score recompute
  10. 2026-10-11 13:48 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  13. 2026-10-08 17:12 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  15. 2026-10-06 15:17 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  18. 2026-10-03 14:25 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  23. 2026-09-26 00:26 UTCEPSS rescoreEPSS 3.4% · 88th percentile
  24. 2026-09-18 19:28 UTCEPSS rescoreEPSS 15% · 96th percentile
  25. 2026-09-17 19:30 UTCEPSS rescoreEPSS 15% · 96th percentile
Show 73 more
  1. 2026-09-16 14:08 UTCEPSS rescoreEPSS 15% · 96th percentile
  2. 2026-09-16 05:15 UTCEPSS rescoreEPSS 15% · 96th percentile
  3. 2026-09-15 03:11 UTCEPSS rescoreEPSS 15% · 96th percentile
  4. 2026-09-13 16:47 UTCEPSS rescoreEPSS 15% · 96th percentile
  5. 2026-09-12 15:01 UTCEPSS rescoreEPSS 15% · 96th percentile
  6. 2026-09-11 14:53 UTCEPSS rescoreEPSS 15% · 96th percentile
  7. 2026-09-11 09:37 UTCEPSS rescoreEPSS 15% · 96th percentile
  8. 2026-09-10 09:34 UTCEPSS rescoreEPSS 15% · 96th percentile
  9. 2026-09-08 22:00 UTCEPSS rescoreEPSS 15% · 96th percentile
  10. 2026-09-07 16:01 UTCEPSS rescoreEPSS 15% · 96th percentile
  11. 2026-09-06 13:47 UTCEPSS rescoreEPSS 15% · 96th percentile
  12. 2026-09-04 05:06 UTCEPSS rescoreEPSS 15% · 96th percentile
  13. 2026-09-02 14:12 UTCEPSS rescoreEPSS 15% · 96th percentile
  14. 2026-09-01 13:53 UTCEPSS rescoreEPSS 15% · 96th percentile
  15. 2026-09-01 04:39 UTCEPSS rescoreEPSS 15% · 96th percentile
  16. 2026-08-30 19:17 UTCEPSS rescoreEPSS 15% · 96th percentile
  17. 2026-08-30 01:22 UTCEPSS rescoreEPSS 15% · 96th percentile
  18. 2026-08-28 21:41 UTCEPSS rescoreEPSS 15% · 96th percentile
  19. 2026-08-27 14:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  20. 2026-08-26 14:46 UTCEPSS rescoreEPSS 15% · 96th percentile
  21. 2026-08-25 13:49 UTCEPSS rescoreEPSS 15% · 96th percentile
  22. 2026-08-23 00:19 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  23. 2026-08-21 23:49 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  24. 2026-08-20 22:55 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  25. 2026-08-19 17:03 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  26. 2026-08-18 13:48 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  27. 2026-08-17 13:47 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  28. 2026-08-16 14:56 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  29. 2026-08-16 07:03 UTCEG score recompute
  30. 2026-08-16 07:03 UTCVendor advisory
  31. 2026-08-16 02:14 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  32. 2026-08-15 01:30 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  33. 2026-08-14 16:12 UTCVendor advisory
  34. 2026-08-14 05:03 UTCEG score recompute
  35. 2026-08-14 05:03 UTCVendor advisory
  36. 2026-08-13 22:00 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  37. 2026-08-13 09:21 UTCVendor advisory
  38. 2026-08-12 19:16 UTCEG score recompute
  39. 2026-08-12 19:16 UTCVendor advisory
  40. 2026-08-12 13:51 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  41. 2026-08-11 19:24 UTCEG score recompute
  42. 2026-08-11 19:24 UTCVendor advisory
  43. 2026-08-11 13:43 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  44. 2026-08-11 02:57 UTCVendor advisory
  45. 2026-08-10 02:47 UTCVendor advisory
  46. 2026-08-09 15:38 UTCEG score recompute
  47. 2026-08-09 15:38 UTCVendor advisory
  48. 2026-08-09 13:46 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  49. 2026-08-09 04:29 UTCEG score recompute
  50. 2026-08-09 04:29 UTCVendor advisory
  51. 2026-08-08 16:37 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  52. 2026-08-08 01:28 UTCEG score recompute
  53. 2026-08-08 01:28 UTCVendor advisory
  54. 2026-08-07 14:20 UTCEG score recompute
  55. 2026-08-07 14:20 UTCVendor advisory
  56. 2026-08-06 13:46 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  57. 2026-08-06 12:40 UTCVendor advisory
  58. 2026-08-05 23:41 UTCEG score recompute
  59. 2026-08-05 23:41 UTCVendor advisory
  60. 2026-08-05 19:17 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  61. 2026-08-04 15:10 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  62. 2026-08-03 21:56 UTCEG score recompute
  63. 2026-08-03 21:56 UTCVendor advisory
  64. 2026-08-03 10:36 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  65. 2026-08-03 00:56 UTCVendor advisory
  66. 2026-08-02 13:47 UTCEG score recompute
  67. 2026-08-02 13:47 UTCVendor advisory
  68. 2026-08-02 02:27 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  69. 2026-08-01 04:16 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  70. 2026-07-30 16:28 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  71. 2026-07-30 01:30 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  72. 2026-07-27 14:13 UTCEPSS rescoreEPSS 6.5% · 93rd percentile
  73. 2026-07-26 14:54 UTCEPSS rescoreEPSS 6.5% · 93rd percentile

Public detection templates

(1 reference)

A public Nuclei detection template is referenced for this CVE. A detection template checks whether a system is affected; it is not necessarily exploit code.

  • Nucleihttp/cves/2026/CVE-2026-40217.yaml
    Published Aug 22, 2026

    LiteLLM < 1.25.0 - Remote Code Execution

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-40217?
CVE-2026-40217 is a high-severity vulnerability; its CVE record was published on April 10, 2026. LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/testcustomcode URI.
When was the CVE record for CVE-2026-40217 published?
The CVE record for CVE-2026-40217 was published on April 10, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 15, 2026; the record at its source may have been updated since.
Is CVE-2026-40217 actively exploited?
CVE-2026-40217 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.4% probability of exploitation in the next 30 days (88th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-40217?
CVE-2026-40217 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-40217?
A fix for CVE-2026-40217 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-40217 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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