CVE-2026-59218

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (33rd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: 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, the /api/v1/auths/signin endpoint looked users up by email and only ran bcrypt password verification when a credential existed, making registered-account attempts measurably slower than missing-email attempts and allowing unauthenticated account enumeration. This issue is fixed in version 0.10.0.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100CISA SSVC

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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 9, 2026

Last Modified

July 10, 2026

Advisory Details (4)

Auto-updated Jul 9, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
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_commit

commit 993e74912199 (open-webui/open-webui)

Fix landed in open-webui/open-webui commit 993e74912199 — awaiting tagged release

https://github.com/open-webui/open-webui/commit/993e74912199c66c522f08ec81abe31d76985e39
github_pr

0.10.0

Fix merged in open-webui/open-webui PR #26385 on 2026-06-29 — awaiting tagged release

https://github.com/open-webui/open-webui/pull/26385
githubMentions a patch (unverified)

Account enumeration via observable login timing discrepancy · Advisory · open-webui/open-webui · GitHub

Affected: 0.10.0.

https://github.com/open-webui/open-webui/security/advisories/GHSA-7rw5-9f7q-xj36

Vendor Advisories for CVE-2026-59218(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 7× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 130 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
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  11. 2026-09-30 15:03 UTCEPSS rescore
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  15. 2026-09-27 13:48 UTCEPSS rescore
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  1. 2026-09-16 05:15 UTCEPSS rescore
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  7. 2026-09-11 14:53 UTCEPSS rescore
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  10. 2026-09-07 16:01 UTCEPSS rescore
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  22. 2026-08-27 14:25 UTCEPSS rescore
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  27. 2026-08-23 01:05 UTCEG score recompute
  28. 2026-08-23 00:19 UTCEPSS rescore
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  30. 2026-08-21 23:49 UTCEPSS rescore
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  32. 2026-08-20 22:55 UTCEPSS rescore
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  34. 2026-08-19 17:04 UTCEPSS rescore
  35. 2026-08-18 20:42 UTCEG score recompute
  36. 2026-08-18 13:48 UTCEPSS rescore
  37. 2026-08-17 13:47 UTCEPSS rescore
  38. 2026-08-17 13:09 UTCEG score recompute
  39. 2026-08-16 14:56 UTCEPSS rescore
  40. 2026-08-16 13:24 UTCEG score recompute
  41. 2026-08-16 02:14 UTCEPSS rescore
  42. 2026-08-15 13:39 UTCEG score recompute
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  45. 2026-08-13 22:00 UTCEPSS rescore
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  47. 2026-08-12 13:51 UTCEPSS rescore
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  50. 2026-08-09 14:57 UTCEG score recompute
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  61. 2026-08-03 12:55 UTCEG score recompute
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  72. 2026-07-29 12:03 UTCEG score recompute
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  74. 2026-07-28 12:18 UTCEG score recompute
  75. 2026-07-27 14:14 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-59218?
CVE-2026-59218 is a medium vulnerability published on July 9, 2026. Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the /api/v1/auths/signin endpoint looked users up by email and only ran bcrypt password verification when a credential existed, making registered-account attempts measurably slower than…
When was CVE-2026-59218 disclosed?
CVE-2026-59218 was first published on July 9, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59218 actively exploited?
CVE-2026-59218 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59218?
CVE-2026-59218 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-59218?
A fix for CVE-2026-59218 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59218 are linked in the Vendor Advisories panel on this page.

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