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: 0.2%, top 84% of all CVEs by exploit prediction. 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
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
5.3(medium)
EPSS
15.5%
KEV
Not listed

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
github Patch Available

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 6× 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.

  1. 2026-07-11 16:00 UTCEG score recompute
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-10 16:15 UTCEG score recompute
  5. 2026-07-09 16:29 UTCEG score recompute
  6. 2026-07-09 16:25 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database 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 15.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-59218?
CVE-2026-59218 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-59218?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59218, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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