Answer in brief
CVE-2026-126305 records a High severity (CVSS 8.5) vulnerability in EspoCRM before 10.0.9 Stored XSS via Knowledge Base Article Attachments. The current sources do not mark it as known exploited. The current feed maps espocrm/espocrm (generic), espocrm/espocrm (generic). 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 8.5. 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 espocrm/espocrm (generic), espocrm/espocrm (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| espocrm/espocrmgeneric | >=10.0.0 <10.0.9 | 10.0.9 |
| espocrm/espocrmgeneric | >=0 <9.3.11 | 9.3.11 |
Published upstream
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 13, 2026
EspoCRM before 9.3.11 and 10.x before 10.0.9 contains a stored cross-site scripting vulnerability in Knowledge Base articles that lets users with Knowledge Base create or edit access attach a JavaScript file and add a crafted link to the article body. When an administrator clicks the link, the script runs in their session and can create an administrator account with attacker-chosen credentials.
Quoted source text, attributed separately from HOL analysis.