CVE-2026-70494

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-04. A secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-52926 (ENISA EUVD) · GHSA-3cg5-48j3-v4gv (GitHub Security Advisories) · PYSEC-2026-3638 (OSV.dev)Source: ENISA EUVD

8.1EG
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: 0.5%CVSS: 8.1Exploit: 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. From 0.10.0 until 0.11.0, the DELETE /api/v1/folders/{id} handler in backend/open_webui/routers/folders.py allowed a user granted write access to a shared chat folder to permanently delete chats and messages belonging to the folder owner. The cascade following the authorization check is bound to the folder owner's id, but the subfolder check accepted any inherited write grant instead of requiring ownership or administrator status. A collaborator can destroy the owner's subtree or force-move chats out of it when delete_contents=false. This issue is fixed in 0.11.0.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity81% × 45%
Impact severity (EG Severity): CVSS 8.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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
0.5%
EPSS %ILE
46th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.

EG Severity
8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-11). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

August 4, 2026

Last Modified

September 18, 2026

Advisory Details (4)

Auto-updated Aug 4, 2026
Patch available. Sources: github_pr, github_release, github, github_commit.
GitHub advisoryMentions a patch (unverified)

A folder write-collaborator can permanently delete the owner's chats by deleting a shared subfolder · Advisory · open-webui/open-webui · GitHub

Affected: 0.11.0 by

https://github.com/open-webui/open-webui/security/advisories/GHSA-3cg5-48j3-v4gv
GitHub release Patch Available

v0.11.0

Patch available: open-webui/open-webui v0.11.0

https://github.com/open-webui/open-webui/releases/tag/v0.11.0
GitHub pull request

fix: restrict folder deletion to the owner or an admin

Fix merged in open-webui/open-webui PR #27003 on 2026-07-27 — awaiting tagged release

https://github.com/open-webui/open-webui/pull/27003
GitHub commit

commit 915ef7d0798d (open-webui/open-webui)

Fix landed in open-webui/open-webui commit 915ef7d0798d — awaiting tagged release

https://github.com/open-webui/open-webui/commit/915ef7d0798d3175819cedbb2f62d7bf0db78c98

Vendor Advisories for CVE-2026-70494(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
pipopen-webui @ 0.11.0 (fixes >= 0.10.0, < 0.11.0)—ghsa

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
open-webui0.10.0, 0.10.1, 0.10.2
  • 0.10.0 up to 0.11.0: fixed in 0.11.0
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 163 rows 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 63 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  2. 2026-11-12 13:42 UTCEchelonGraph re-scored
  3. 2026-11-12 13:42 UTCGHSA enrichmentGHSA-3cg5-48j3-v4gv · GitHub severity HIGH · GitHub CVSS 8.1
  4. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  5. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  6. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  7. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  8. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  9. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  10. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  11. 2026-11-05 02:37 UTCEchelonGraph re-scored
  12. 2026-11-05 02:37 UTCGHSA enrichmentGHSA-3cg5-48j3-v4gv · GitHub severity HIGH · GitHub CVSS 8.1
  13. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  14. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  15. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  16. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  17. 2026-11-01 07:40 UTCGHSA enrichmentGHSA-3cg5-48j3-v4gv · GitHub severity HIGH · GitHub CVSS 8.1
  18. 2026-11-01 07:40 UTCEchelonGraph re-scored
  19. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  20. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  21. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  22. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  23. 2026-10-28 15:32 UTCEchelonGraph re-scored
  24. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  25. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
Show 75 more
  1. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-10-25 14:08 UTCEchelonGraph re-scored
  3. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  4. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  5. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  6. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  7. 2026-10-20 20:05 UTCEchelonGraph re-scored
  8. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  9. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  10. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  11. 2026-10-18 03:18 UTCEchelonGraph re-scored
  12. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  13. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  14. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  15. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  16. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  17. 2026-10-13 08:59 UTCEchelonGraph re-scored
  18. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  19. 2026-10-12 15:43 UTCEchelonGraph re-scored
  20. 2026-10-11 19:29 UTCEchelonGraph re-scored
  21. 2026-10-11 16:44 UTCEchelonGraph re-scored
  22. 2026-10-11 14:04 UTCEchelonGraph re-scored
  23. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  24. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  25. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  26. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  27. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  28. 2026-10-06 23:41 UTCEchelonGraph re-scored
  29. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  30. 2026-10-05 19:40 UTCEchelonGraph re-scored
  31. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  32. 2026-10-04 23:38 UTCEchelonGraph re-scored
  33. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  34. 2026-10-04 06:09 UTCEchelonGraph re-scored
  35. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  36. 2026-10-03 01:54 UTCEchelonGraph re-scored
  37. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  38. 2026-10-02 10:06 UTCEchelonGraph re-scored
  39. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  40. 2026-10-01 02:25 UTCEchelonGraph re-scored
  41. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  42. 2026-09-29 06:24 UTCEchelonGraph re-scored
  43. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  44. 2026-09-27 17:59 UTCEchelonGraph re-scored
  45. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  46. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  47. 2026-09-25 04:40 UTCEchelonGraph re-scored
  48. 2026-09-24 04:18 UTCEchelonGraph re-scored
  49. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  50. 2026-09-23 03:19 UTCEchelonGraph re-scored
  51. 2026-09-22 03:10 UTCEchelonGraph re-scored
  52. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  53. 2026-09-20 20:51 UTCEchelonGraph re-scored
  54. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  55. 2026-09-19 17:43 UTCEchelonGraph re-scored
  56. 2026-09-19 03:33 UTCEchelonGraph re-scored
  57. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  58. 2026-09-18 04:17 UTCEchelonGraph re-scored
  59. 2026-09-17 01:10 UTCEchelonGraph re-scored
  60. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  61. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  62. 2026-09-15 03:34 UTCEchelonGraph re-scored
  63. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  64. 2026-09-14 03:15 UTCEchelonGraph re-scored
  65. 2026-09-13 03:06 UTCEchelonGraph re-scored
  66. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  67. 2026-09-12 02:57 UTCEchelonGraph re-scored
  68. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  69. 2026-09-11 14:52 UTCEchelonGraph re-scored
  70. 2026-09-10 14:39 UTCEchelonGraph re-scored
  71. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  72. 2026-09-09 09:07 UTCEchelonGraph re-scored
  73. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  74. 2026-09-07 18:29 UTCEchelonGraph re-scored
  75. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile

Frequently asked(5)

What is CVE-2026-70494?
CVE-2026-70494 is a high-severity vulnerability; its CVE record was published on August 4, 2026. Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, the DELETE /api/v1/folders/{id} handler in backend/open_webui/routers/folders.py allowed a user granted write access to a shared chat folder to permanently delete chats and messages…
When was the CVE record for CVE-2026-70494 published?
The CVE record for CVE-2026-70494 was published on August 4, 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 September 18, 2026; the record at its source may have been updated since.
Is CVE-2026-70494 actively exploited?
CVE-2026-70494 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70494?
CVE-2026-70494 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70494?
A fix for CVE-2026-70494 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70494 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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