Obsidian plugins are (mostly) dangerous
Research has revealed serious vulnerabilities in the Excalidraw plugin for Obsidian, highlighting the risks associated with developer tools. ZeroQuarry identified numerous high-severity issues, many of which stem from the complex interactions within the plugin's ecosystem. Following the discovery, several fixes have been implemented to mitigate these vulnerabilities.
- ▪ZeroQuarry found 41 high-severity, 32 medium-severity, and 2 low-severity vulnerabilities in the Excalidraw plugin.
- ▪The vulnerabilities identified were not simple code issues but rather product-context findings related to how Obsidian vaults and Excalidraw drawings function.
- ▪Developer tools like the Excalidraw plugin are particularly vulnerable due to their rich extension systems and broad access to sensitive user data.
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Record
| Original publisher | Zeroquarry |
| Canonical URL | https://zeroquarry.com/research/excalidraw-vulnerabilities/ |
| Publication time | Thu, 21 May 2026 05:05:32 +0000 |
| Retrieval time | 2026-05-21T05:35:03.513Z |
| Last seen | 2026-05-21T05:35:03.513Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | eNDdP8MvYZLO |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Research ZeroQuarry Research May 20, 2026 rce obsidian Many serious vulnerabilities found in Obsidian's Excalidraw plugin ZeroQuarry identified and helped fix a large number of vulnerabilities in the Excalidraw plugin for Obsidian. Request a private scan -> What we are withholding Disclosure status Mitigation available Excalidraw now has shipped a number of fixes. We are limiting exploit detail to avoid showing weaponized payloads. Class Remote code execution Surface Obsidian community plugin Posture Disclosure-safe Developer tools are an unusually high-value target Example 1: A drawing file could execute script on open Example 2: A pretty icon could become executable UI Example 3: A link in a drawing could become an Obsidian command Example 4: A cleanup feature could delete the wrong…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Zeroquarry.
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