CVE-2026-59214

CRITICALNVD 9.09.0
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.0 under NVD CVSS v3. EPSS exploit probability: 0.4% (34th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
9.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue authenticated same-origin requests when a victim clicks Run, which can reach admin-only endpoints and execute server-side code through configured tools. This issue is fixed in version 0.10.0.

CVSS v3
9.0
EG Score
9.0CRITICALmedium confidence
EG Risk
41
EG Risk 41/100

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)
Severity90% × 45%
The EG Score, 9.0 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (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.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (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

July 9, 2026

Last Modified

July 10, 2026

Advisory Details (1)

Auto-updated Jul 9, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

Same-origin Pyodide code execution allows server-side RCE via a shared chat · Advisory · open-webui/open-webui · GitHub

https://github.com/open-webui/open-webui/security/advisories/GHSA-4r2p-27mh-5m22

Vendor Advisories for CVE-2026-59214(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 rangeFix by version rangeDependents
open-webui0.1.124 ... 0.9.6 (158 versions)
  • every version up to 0.10.0: fixed in 0.10.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 37× 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 100 of 153 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. None are among the latest 100 rows. The 53 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 01:52 UTCEG score recompute
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  3. 2026-10-12 22:06 UTCEG score recompute
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  5. 2026-10-12 15:52 UTCEG score recompute
  6. 2026-10-11 19:36 UTCEG score recompute
  7. 2026-10-11 16:51 UTCEG score recompute
  8. 2026-10-11 14:14 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-10-01 16:02 UTCEG score recompute
  21. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  22. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  23. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  24. 2026-09-28 10:29 UTCEG score recompute
  25. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  2. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-09-24 11:24 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-09-23 05:55 UTCEG score recompute
  6. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-09-18 05:36 UTCEG score recompute
  9. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  10. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  12. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  13. 2026-09-13 23:46 UTCEG score recompute
  14. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  15. 2026-09-13 08:19 UTCEG score recompute
  16. 2026-09-12 03:23 UTCEG score recompute
  17. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  18. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  19. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  20. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  21. 2026-09-06 13:59 UTCEG score recompute
  22. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  23. 2026-09-05 22:35 UTCEG score recompute
  24. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  25. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  26. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  27. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  28. 2026-08-30 20:45 UTCEG score recompute
  29. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  30. 2026-08-30 06:46 UTCEG score recompute
  31. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  32. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  33. 2026-08-27 21:45 UTCEG score recompute
  34. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  35. 2026-08-27 01:01 UTCEG score recompute
  36. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  37. 2026-08-25 14:47 UTCEG score recompute
  38. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  39. 2026-08-24 20:20 UTCEG score recompute
  40. 2026-08-24 09:36 UTCEG score recompute
  41. 2026-08-23 01:54 UTCEG score recompute
  42. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  43. 2026-08-22 00:51 UTCEG score recompute
  44. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  45. 2026-08-20 23:24 UTCEG score recompute
  46. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  47. 2026-08-20 01:48 UTCEG score recompute
  48. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  49. 2026-08-18 20:42 UTCEG score recompute
  50. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  51. 2026-08-17 14:12 UTCEG score recompute
  52. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  53. 2026-08-16 17:00 UTCEG score recompute
  54. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  55. 2026-08-16 04:48 UTCEG score recompute
  56. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  57. 2026-08-15 04:23 UTCEG score recompute
  58. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  59. 2026-08-13 23:54 UTCEG score recompute
  60. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  61. 2026-08-12 14:51 UTCEG score recompute
  62. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  63. 2026-08-11 14:28 UTCEG score recompute
  64. 2026-08-11 02:17 UTCEG score recompute
  65. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  66. 2026-08-09 17:21 UTCEG score recompute
  67. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  68. 2026-08-08 16:58 UTCEG score recompute
  69. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  70. 2026-08-07 16:36 UTCEG score recompute
  71. 2026-08-06 16:12 UTCEG score recompute
  72. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  73. 2026-08-05 19:53 UTCEG score recompute
  74. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  75. 2026-08-04 18:22 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-59214?
CVE-2026-59214 is a critical-severity vulnerability; its CVE record was published on July 9, 2026. Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue…
When was the CVE record for CVE-2026-59214 published?
The CVE record for CVE-2026-59214 was published on July 9, 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 10, 2026; the record at its source may have been updated since.
Is CVE-2026-59214 actively exploited?
CVE-2026-59214 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59214?
CVE-2026-59214 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-59214?
A fix for CVE-2026-59214 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59214 are linked in the Vendor Advisories panel on this page.

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