CVE-2026-59714

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (39th 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
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.1Exploit: 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 0.9.5 before 0.10.0, any authenticated user can overwrite the content of a message in a channel they do not belong to (including private and DM channels) by sending a chat completion request with a channel:-prefixed chat_id and a target message_id. The channel: path routes pipeline output through _make_channel_emitter, which writes to the Messages table using the caller-supplied message_id without binding it to the channel. This issue is fixed in version 0.10.0.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100CISA 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

CISA SSVCTrack 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). 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 24, 2026

Last Modified

September 18, 2026

Advisory Details (4)

Auto-updated Aug 13, 2026
🔬 Proof of concept available. 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 ac3449cac91e (open-webui/open-webui)

Fix landed in open-webui/open-webui commit ac3449cac91e — awaiting tagged release

https://github.com/open-webui/open-webui/commit/ac3449cac91e62b08a7c28e54fcd044d14dea791
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)🟡 PoC Available

Cross-channel message overwrite via chat completion API (single-model and multimodel message_ids) · Advisory · open-webui/open-webui · GitHub

Affected: v0.9.6):

https://github.com/open-webui/open-webui/security/advisories/GHSA-x2ff-v5v8-m75m

Vendor Advisories for CVE-2026-59714(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-webui0.9.5, 0.9.6
  • 0.9.5 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 8× in last 7d / 41× 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. 2026-10-10 20:00 UTCEPSS rescore
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  3. 2026-10-08 17:13 UTCEPSS rescore
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  8. 2026-10-04 07:42 UTCEG score recompute
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  11. 2026-10-02 17:56 UTCEPSS rescore
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  14. 2026-09-30 15:03 UTCEPSS rescore
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  16. 2026-09-28 13:51 UTCEPSS rescore
  17. 2026-09-28 04:26 UTCEG score recompute
  18. 2026-09-27 13:48 UTCEPSS rescore
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  20. 2026-09-25 10:04 UTCEG score recompute
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  24. 2026-09-22 22:10 UTCEG score recompute
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  1. 2026-09-20 01:39 UTCEG score recompute
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  3. 2026-09-18 19:28 UTCEPSS rescore
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  5. 2026-09-17 19:31 UTCEPSS rescore
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  7. 2026-09-16 14:08 UTCEPSS rescore
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  20. 2026-09-08 22:01 UTCEPSS rescore
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  22. 2026-09-07 16:01 UTCEPSS rescore
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  24. 2026-09-05 19:22 UTCEG score recompute
  25. 2026-09-05 06:53 UTCEG score recompute
  26. 2026-09-04 12:48 UTCEG score recompute
  27. 2026-09-04 05:07 UTCEPSS rescore
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  29. 2026-09-01 23:15 UTCEG score recompute
  30. 2026-09-01 13:54 UTCEPSS rescore
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  37. 2026-08-28 21:42 UTCEPSS rescore
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  39. 2026-08-27 14:25 UTCEPSS rescore
  40. 2026-08-26 19:52 UTCEG score recompute
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  42. 2026-08-25 17:44 UTCEG score recompute
  43. 2026-08-25 13:49 UTCEPSS rescore
  44. 2026-08-24 18:05 UTCEG score recompute
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  48. 2026-08-21 23:49 UTCEPSS rescore
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  50. 2026-08-20 22:55 UTCEPSS rescore
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  55. 2026-08-17 20:21 UTCEG score recompute
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  60. 2026-08-16 02:14 UTCEPSS rescore
  61. 2026-08-15 07:23 UTCEG score recompute
  62. 2026-08-15 01:30 UTCEPSS rescore
  63. 2026-08-14 19:36 UTCEG score recompute
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  66. 2026-07-30 20:31 UTCEG score recompute
  67. 2026-07-26 21:29 UTCEG score recompute
  68. 2026-07-24 17:12 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-59714?
CVE-2026-59714 is a high vulnerability published on July 24, 2026. Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 before 0.10.0, any authenticated user can overwrite the content of a message in a channel they do not belong to (including private and DM channels) by sending a chat completion request with a…
When was CVE-2026-59714 disclosed?
CVE-2026-59714 was first published on July 24, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59714 actively exploited?
CVE-2026-59714 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59714?
CVE-2026-59714 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-59714?
A fix for CVE-2026-59714 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59714 are linked in the Vendor Advisories panel on this page.

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