CVE-2026-108721 (GCVE-0-2026-108721)
Vulnerability from cvelistv5 – Published: 2026-10-11 12:19 – Updated: 2026-10-11 12:19
VLAI
EPSS
VEX
Title
Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID
Summary
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.
Severity
5.3 (Medium)
CWE
- CWE-178 - Improper Handling of Case Sensitivity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haind/rJHI_S6IiMl | third-party-advisory |
| https://github.com/iFurySt/open-codex-computer-us… | technical-description |
| https://github.com/iFurySt/open-codex-computer-us… | technical-description |
| https://github.com/iFurySt/open-codex-computer-use | product |
| https://www.vulncheck.com/advisories/open-compute… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| iFurySt | open-computer-use |
Affected:
0 , ≤ 1.0.0
(semver)
|
guessed |
Date Public
2026-10-10 00:00
{
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"packageURL": "pkg:github/iFurySt/open-codex-computer-use",
"product": "open-computer-use",
"repo": "https://github.com/iFurySt/open-codex-computer-use",
"vendor": "iFurySt",
"versions": [
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}
],
"metrics": [
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"baseScore": 5.8,
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"version": "4.0",
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"problemTypes": [
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"description": "Improper Handling of Case Sensitivity",
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"providerMetadata": {
"dateUpdated": "2026-10-11T12:19:31.981Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
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"url": "https://hackmd.io/@haind/rJHI_S6IiMl"
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"url": "https://github.com/iFurySt/open-codex-computer-use/blob/8a3a7dec06402db2d760368cb24676ad3ba42c49/packages/OpenComputerUseKit/Sources/OpenComputerUseKit/AppDiscovery.swift#L144-L198"
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},
{
"tags": [
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"url": "https://github.com/iFurySt/open-codex-computer-use"
},
{
"name": "VulnCheck Advisory: Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/open-computer-use-through-1.0.0-denylist-bypass-via-case-variant-bundle-id"
}
],
"title": "Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-108721",
"datePublished": "2026-10-11T12:19:31.981Z",
"dateReserved": "2026-10-11T01:52:29.003Z",
"dateUpdated": "2026-10-11T12:19:31.981Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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{
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"version": "0",
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}
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"cveTags": [],
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"lang": "en",
"value": "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."
}
],
"id": "CVE-2026-108721",
"lastModified": "2026-10-11T13:17:15.470",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
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"attackVector": "LOCAL",
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"baseScore": 5.3,
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"confidentialityImpact": "HIGH",
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"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 4.2,
"source": "disclosure@vulncheck.com",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"availabilityRequirement": "NOT_DEFINED",
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"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
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"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
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},
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"published": "2026-10-11T13:17:15.470",
"references": [
{
"source": "disclosure@vulncheck.com",
"url": "https://github.com/iFurySt/open-codex-computer-use"
},
{
"source": "disclosure@vulncheck.com",
"url": "https://github.com/iFurySt/open-codex-computer-use/blob/8a3a7dec06402db2d760368cb24676ad3ba42c49/packages/OpenComputerUseKit/Sources/OpenComputerUseKit/AppDiscovery.swift#L144-L198"
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"url": "https://hackmd.io/@haind/rJHI_S6IiMl"
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}
],
"sourceIdentifier": "disclosure@vulncheck.com",
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}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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