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CVE-2024-55950

Tabby has a TCC Bypass via Unnecessary Permissive Entitlements in Tabby

HIGH
8.6
CVSS Score
Published: December 26, 2024 at 09:52 PM UTC
Updated: June 17, 2026 at 08:11 AM UTC
1 product affected across 1 vendorTabby

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Severity
HIGH8.6
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.216, Tabby terminal emulator contains overly permissive entitlements that are unnecessary for its core functionality and plugin system, creating potential security vulnerabilities. The application currently holds powerful permissions including camera, microphone access, and the ability to access personal folders (Downloads, Documents, etc.) through Apple Events, while also maintaining dangerous entitlements that enable code injection. The concerning entitlements are com.apple.security.cs.allow-dyld-environment-variables and com.apple.security.cs.disable-library-validation. Since Tabby's plugins and themes are NodeJS-based without native libraries or frameworks, and no environment variables are used in the codebase, it is recommended to review and remove at least one of the entitlements (com.apple.security.cs.disable-library-validation or com.apple.security.cs.allow-dyld-environment-variables) to prevent DYLD_INSERT_LIBRARIES injection while maintaining full application functionality. This vulnerability is fixed in 1.0.216.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tabby· Eugeny
60%
v < 1.0.216
Affected range stops below 1.0.216, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISC
Source: [email protected]
https://github.com/Eugeny/tabby/commit/e1e6e1cdab0310a881e36afd7c2744e5f905518b
x_refsource_CONFIRM
Source: [email protected]
https://github.com/Eugeny/tabby/security/advisories/GHSA-jx33-9jc7-24gc

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-276

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