HOMEVULNERABILITIESCVE-2026-45397
MEDIUM

CVE-2026-45397

CWE-306Published: May 15, 2026· Updated: May 19, 2026

5.3
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:8.6th

Official Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, GET /api/v1/retrieval/ returns live RAG pipeline configuration to any unauthenticated HTTP client. No Authorization header, cookie, or API key is required. Every adjacent endpoint on the same router (/embedding, /config) is correctly guarded by get_admin_user making this a targeted omission. This vulnerability is fixed in 0.9.5.

NVD Source

Technical Analysis

CVE-2026-45397 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

openwebui1 product
open webui
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/open-webui/open-webui/security/advisories/GHSA-65pg-qhhw-mxwg
ADVISORYhttps://github.com/open-webui/open-webui/security/advisories/GHSA-65pg-qhhw-mxwg

All References (2)

→
https://github.com/open-webui/open-webui/security/advisories/GHSA-65pg-qhhw-mxwgExploit · Mitigation · Vendor Advisory
→
https://github.com/open-webui/open-webui/security/advisories/GHSA-65pg-qhhw-mxwgExploit · Mitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2026-45397
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-306
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedMay 15, 2026

Related CVEs (CWE-306)

CVE-2026-44329
10.0
CVE-2026-34162
10.0
CVE-2026-50242
10.0
CVE-2026-2577
10.0
CVE-2026-3611
10.0
CVE-2026-54309
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-45397 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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