Answer in brief
CVE-2026-70481 records a Medium severity (CVSS 5.4) vulnerability in Open WebUI: Any member with write access to a standard channel can edit or delete other members' messages. The current sources do not mark it as known exploited. The current feed maps open-webui/open-webui (generic), open-webui (pip), open-webui (pypi). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps open-webui/open-webui (generic), open-webui (pip), open-webui (pypi). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| open-webui/open-webuigeneric | >= 0.5.0, < 0.11.0 | Not reported |
| open-webuipip | >=0.5.0,<=0.10.2 | 0.11.0 |
| open-webuipypi | >=0.5.0 <0.11.0 | 0.11.0 |
Published upstream
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.0, the standard channel message update and delete handlers accepted any caller holding write access on the channel without checking that the caller wrote the message. Because write access is the same grant a member needs to post, any ordinary participant in a shared standard channel could rewrite or permanently delete another participant message, while group and direct message handlers enforced authorship. This issue is fixed in 0.11.0.
Quoted source text, attributed separately from HOL analysis.