CVE-2026-59216

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: 0.5% (37th 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
Elevated
9.0EG
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: 0.5%CVSS: 9.0Exploit: No code on recordExposed 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, get_event_call delivered execute:python and execute:tool Socket.IO events to a client-supplied session_id after checking only that the session was connected, allowing authenticated users who learned another socket ID through ydoc:document:join to run code interpreter Python or tools in that user session. This issue is fixed in version 0.10.0.

CVSS v3
9.0
EG Score
9.0CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

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.
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
0.5%
EPSS %ILE
37th
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

July 9, 2026

Last Modified

July 13, 2026

Advisory Details (4)

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

Cross-user code-interpreter and tool execution via unvalidated Socket.IO event-caller session_id · Advisory · open-webui/open-webui · GitHub

https://github.com/open-webui/open-webui/security/advisories/GHSA-74h3-cxq7-vc5q
GitHub release Patch Available

v0.10.0

Patch available: open-webui/open-webui v0.10.0

https://github.com/open-webui/open-webui/releases/tag/v0.10.0
GitHub pull request

fix: scope Socket.IO event-caller to the requesting user's own session

Fix merged in open-webui/open-webui PR #25763 on 2026-06-29 — awaiting tagged release

https://github.com/open-webui/open-webui/pull/25763
GitHub commit

commit 386ac958144d (open-webui/open-webui)

Fix landed in open-webui/open-webui commit 386ac958144d — awaiting tagged release

https://github.com/open-webui/open-webui/commit/386ac958144dbbbf0aa6e268070d72b681a318aa

Vendor Advisories for CVE-2026-59216(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(4)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 35× 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 146 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 46 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:36 UTCEG score recompute
  2. 2026-10-11 16:51 UTCEG score recompute
  3. 2026-10-11 14:14 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  13. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-10-01 16:02 UTCEG score recompute
  16. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  17. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  18. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  19. 2026-09-28 10:28 UTCEG score recompute
  20. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  21. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  22. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  23. 2026-09-24 11:24 UTCEG score recompute
  24. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  25. 2026-09-23 05:55 UTCEG score recompute
Show 75 more
  1. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  2. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  3. 2026-09-18 05:36 UTCEG score recompute
  4. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  5. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  6. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  7. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  8. 2026-09-13 17:06 UTCEG score recompute
  9. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  10. 2026-09-13 08:19 UTCEG score recompute
  11. 2026-09-12 03:23 UTCEG score recompute
  12. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  13. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  14. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  15. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  16. 2026-09-06 13:59 UTCEG score recompute
  17. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  18. 2026-09-05 22:35 UTCEG score recompute
  19. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  20. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  21. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  22. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-08-30 21:06 UTCEG score recompute
  24. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  25. 2026-08-30 06:45 UTCEG score recompute
  26. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  27. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  28. 2026-08-27 21:45 UTCEG score recompute
  29. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  30. 2026-08-27 01:01 UTCEG score recompute
  31. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  32. 2026-08-25 14:47 UTCEG score recompute
  33. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  34. 2026-08-24 20:20 UTCEG score recompute
  35. 2026-08-24 09:36 UTCEG score recompute
  36. 2026-08-23 02:21 UTCEG score recompute
  37. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  38. 2026-08-22 03:36 UTCEG score recompute
  39. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  40. 2026-08-21 00:08 UTCEG score recompute
  41. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  42. 2026-08-20 01:48 UTCEG score recompute
  43. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  44. 2026-08-18 20:42 UTCEG score recompute
  45. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  46. 2026-08-17 22:16 UTCEG score recompute
  47. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  48. 2026-08-16 15:32 UTCEG score recompute
  49. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  50. 2026-08-16 02:24 UTCEG score recompute
  51. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  52. 2026-08-15 04:29 UTCEG score recompute
  53. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  54. 2026-08-14 02:10 UTCEG score recompute
  55. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  56. 2026-08-12 15:04 UTCEG score recompute
  57. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  58. 2026-08-11 17:07 UTCEG score recompute
  59. 2026-08-11 03:51 UTCEG score recompute
  60. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  61. 2026-08-09 16:46 UTCEG score recompute
  62. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  63. 2026-08-07 16:33 UTCEG score recompute
  64. 2026-08-06 18:08 UTCEG score recompute
  65. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  66. 2026-08-05 20:11 UTCEG score recompute
  67. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  68. 2026-08-04 18:14 UTCEG score recompute
  69. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  70. 2026-08-04 13:37 UTCEG score recompute
  71. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  72. 2026-08-03 12:55 UTCEG score recompute
  73. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  74. 2026-08-02 02:50 UTCEG score recompute
  75. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 23rd percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-59216?
CVE-2026-59216 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, geteventcall delivered execute:python and execute:tool Socket.IO events to a client-supplied session_id after checking only that the session was connected, allowing authenticated users who learned…
When was the CVE record for CVE-2026-59216 published?
The CVE record for CVE-2026-59216 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 13, 2026; the record at its source may have been updated since.
Is CVE-2026-59216 actively exploited?
CVE-2026-59216 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59216?
CVE-2026-59216 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-59216?
A fix for CVE-2026-59216 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59216 are linked in the Vendor Advisories panel on this page.

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