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CVE-2026-54013

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI patched SVG XSS in user profile images and webhook profile images but forgot to apply the same fix to model profile images. The ModelMeta class has no validate_profile_image_url field validator, and the model image serving endpoint has no MIME allowlist or nosniff header.

Any authenticated user with workspace.models permission (enabled by default) can store a data:image/svg+xml;base64,... payload in a model's profile image and achieve full account takeover of anyone who navigates to the image URL. This vulnerability is fixed in 0.9.6.

HIGH · CVSS 7.6
Schedule remediation
  • CVSS base score ≥ 7.0
No Sigma yet — build one → YARA rules0
Look this up elsewhere - one-click external pivots
NVDCVE.orgCISAExploit-DBGitHub PoCVulnCheck KEVGreyNoise
▸ How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2026-54013, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.
Triage: should I act now? Four signals, and they are not interchangeable:
CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked. EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal. CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score. Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.
How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.
Then what - two workflows:
Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits. PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.
Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).
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Severity & exploitation scoring

View on NVD →
CVSS base score
7.6
HIGHCVSS v3.1 · [email protected]
EPSS exploitation probability
n/a
No EPSS score in our data for this CVE. EPSS is published daily for scored CVEs - a very new, reserved, or rejected CVE may not have one yet.
CVSS metric silhouette
VectorComplexityPrivilegesInteractionScopeConfidentialityIntegrityAvailability
shape grows toward worst-case
SSVC triage
No SSVC vulnrichment for this CVE. CISA's Vulnrichment program scores newer CVEs (~2024 onwards) plus selected older critical ones. Use the EPSS probability + KEV status to triage instead.
CVSS vector breakdown
Exploitability - how they get in
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Impact - what breaks
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
VECTORCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Attack path
Full kill chain
→
◆

ATT&CK techniques

1

Techniques this CVE enables. Pills with a solid outline are high confidence - named directly in ATT&CK or Nuclei, or human-curated by CTID; the rest are inferred from the weakness type using MITRE's CVE Mapping Methodology and the CWE → CAPEC chain. Broad, generic-weakness guesses are filtered out. A small N× marks a technique that N independent sources agree on.

T1059.007 · JavaScript
▤ Build a SIEM detection for these techniques
▤

CAPEC attack patterns

12

Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.

CAPEC-CAPEC-1 · Accessing Functionality Not Properly Constrained by ACLs CAPEC-CAPEC-104 · Cross Zone Scripting CAPEC-CAPEC-107 · Cross Site Tracing CAPEC-CAPEC-127 · Directory Indexing CAPEC-CAPEC-17 · Using Malicious Files CAPEC-CAPEC-20 · Encryption Brute Forcing CAPEC-CAPEC-209 · XSS Using MIME Type Mismatch CAPEC-CAPEC-22 · Exploiting Trust in Client CAPEC-CAPEC-237 · Escaping a Sandbox by Calling Code in Another Language CAPEC-CAPEC-36 · Using Unpublished Interfaces or Functionality CAPEC-CAPEC-477 · Signature Spoofing by Mixing Signed and Unsigned Content CAPEC-CAPEC-480 · Escaping Virtualization
⬡

Weakness Classification

CWE-116Improper Encoding or Escaping of Output
CWE-693Protection Mechanism Failure
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI open-webui HIGH fixed in 0.9.6
▤

Related CVEs

8
CVEs linked to this one by a shared weakness (CWE) or affected product - joins on data already in the engine, with the reason shown per row.
CVE-2009-4267 The console in Apache jUDDI 3.0.0 does not properly escape line feeds, which all... same CWE-116 MEDIUM CVE-2013-4547 nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to byp... 1 same CWE-116 CVE-2013-2011 WordPress W3 Super Cache Plugin before 1.3.2 contains a PHP code-execution vulne... same CWE-116 HIGH CVE-2014-9938 contrib/completion/git-prompt.sh in Git before 1.9.3 does not sanitize branch na... same CWE-116 HIGH CVE-2011-3151 The Ubuntu SELinux initscript before version 1:0.10 used touch to create a lockf... same CWE-693 MEDIUM CVE-2013-0431 Unspecified vulnerability in the Java Runtime Environment (JRE) component in Ora... 1 same CWE-693 MEDIUM CVE-2013-2465 Unspecified vulnerability in the Java Runtime Environment (JRE) component in Ora... 1 same CWE-693 CRITICAL CVE-2014-125107 A vulnerability was found in Corveda PHPSandbox 1.3.4 and classified as critical... same CWE-693 MEDIUM
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/open-webui/open-webui/security/advisories/GHSA-v2qm-5wxj-qhj7
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