CVE-2026-108721CWE-178

CVE-2026-108721

Medium · published October 11, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
2.5
In the wild
Unconfirmed
What it is

Open Computer Use through 1.0.0 on macOS contains an improper case sensitivity handling vulnerability that allows local MCP callers to bypass the password-manager denylist using case-variant bundle identifiers. Attackers, including prompt-injected model turns, can pass identifiers like com.1Password.1Password to get_app_state and action tools to read accessibility trees, capture screenshots, and drive unlocked password manager interfaces.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
CVSS v4.0
5.8 · CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00132 · 2.5th percentile
Weakness
CWE-178 · Improper Handling of Case Sensitivity
Published
2026-10-11T17:17Z
References (5)
https://github.com/iFurySt/open-codex-computer-use · [email protected]https://github.com/iFurySt/open-codex-computer-use/blob/8a3a7dec06402db2d760368cb24676ad3ba42c49/packages/OpenComputerUseKit/Sources/OpenComputerUseKit/AppDiscovery.swift#L144-L198 · [email protected]https://github.com/iFurySt/open-codex-computer-use/blob/8a3a7dec06402db2d760368cb24676ad3ba42c49/packages/OpenComputerUseKit/Sources/OpenComputerUseKit/AppDiscovery.swift#L554-L572 · [email protected]https://hackmd.io/@haind/rJHI_S6IiMl · [email protected]https://www.vulncheck.com/advisories/open-computer-use-through-1.0.0-denylist-bypass-via-case-variant-bundle-id · [email protected]
EPSS history
Timeline
  • 13 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 11 OCT 12:19Z
    Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID
    cvelistv5
  • 11 OCT 12:19Z
    Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID
    cvelistv5