CVE-2026-14898: Infoleak
The OpenAI Codex desktop app for macOS rendered remote images from Markdown in model responses. An attacker who could place an indirect prompt injection in content processed by Codex, such as a connected-tool result or another untrusted source, could induce the model to construct a remote image URL containing sensitive data. The app automatically fetched that URL when rendering the response, sending the embedded data to an attacker-controlled server without a separate user click. Successful exploitation could exfiltrate secrets and other information accessible in the Codex session, including API keys, source code, and data returned by connected tools. No direct integrity or availability impact was demonstrated, and there is no known exploitation in the wild.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 26.527.31326 - Configuration
Disable loading remote images from Markdown in model responses (product fix disables loading remote images from Markdown).
OpenAI Codex desktop app for macOS Remote images from Markdown = disabled
Event History
Frequently Asked Questions
What is the severity of CVE-2026-14898?
The severity of CVE-2026-14898 is classified as medium with a CVSS score of 6.5.
How do I fix CVE-2026-14898?
To fix CVE-2026-14898, ensure that you are using the latest version of the OpenAI Codex desktop app for macOS that addresses this vulnerability.
What type of vulnerability is described by CVE-2026-14898?
CVE-2026-14898 is categorized as an Infoleak vulnerability due to its potential to expose remote image URLs.
What impact does CVE-2026-14898 have on users?
CVE-2026-14898 can allow an attacker to induce the model to construct a malicious remote image URL through indirect prompt injection.
When was CVE-2026-14898 published?
CVE-2026-14898 was published on July 6, 2026.