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CVE Record

CVE-2026-47090: Claude HUD 0.0.12 Terminal Injection via OSC 8 Hyperlinks

Claude HUD through 0.0.12, patched in commit 234d9aa, constructs OSC 8 terminal hyperlink escape sequences using raw cwd and branchUrl values without stripping control characters or encoding embedded values, allowing attackers to inject arbitrary ANSI codes into terminal sessions. Attackers can embed ESC+backslash sequences in the current working directory or branch URL to execute malicious ANSI codes including text color changes, forged prompts, and OSC 52 clipboard writes, or trigger outbound HTTP requests to attacker-controlled remotes when hyperlinks are clicked.

MediumCVSS 4.6Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Claude HUD could print terminal hyperlinks built from untrusted directory or branch URL text without cleaning control characters. A malicious repository path or remote URL could alter what a developer sees in the terminal, write to the clipboard in terminals that allow it, or mislead clicks. Business risk is developer workstation compromise support, not broad server takeover.

Executive priority

Treat this as a targeted developer-environment risk. Prioritize teams handling sensitive code or secrets, but do not rank it with remotely exploitable enterprise vulnerabilities based on current evidence.

Technical view

CVE-2026-47090 is a CWE-150 terminal control sequence injection in Claude HUD through 0.0.12. Raw cwd and branchUrl values are embedded into OSC 8 hyperlinks, allowing injected ANSI sequences. Reported effects include forged prompts, display manipulation, OSC 52 clipboard writes, and outbound requests after user hyperlink interaction.

Likely exposure

Exposure is likely limited to users running Claude HUD through 0.0.12, especially developers opening untrusted repositories, directories, or remotes. The source bundle identifies a patch commit but no named fixed release.

Exploitation context

The CVSS vector requires local access, low attack complexity, low privileges, and user interaction. The source bundle does not show KEV listing or active exploitation evidence. The practical scenario is social or repository-based deception in a developer terminal.

Researcher notes

The key control failure is unsafe construction of OSC 8 hyperlinks from cwd and branchUrl. Evidence supports terminal injection and user-assisted effects, but not autonomous code execution or active exploitation. Fixed-version mapping may require vendor confirmation.

Mitigation direction

  • Update Claude HUD to a build containing commit 234d9aad919b51326a43bcf90b45ae35c23afc30.
  • If no fixed release is available, follow vendor guidance or temporarily disable Claude HUD.
  • Avoid clicking terminal hyperlinks from untrusted repositories until updated.
  • Restrict use of affected Claude HUD versions in sensitive development environments.
  • Consider terminal controls that disable or limit OSC 52 clipboard behavior.

Validation and detection

  • Inventory Claude HUD installations and flag versions through 0.0.12.
  • Confirm deployed code includes patch commit 234d9aad919b51326a43bcf90b45ae35c23afc30.
  • Review developer environments that open untrusted repositories or branch remotes.
  • Check terminal emulator policy for OSC 8 hyperlinks and OSC 52 clipboard access.
  • Record remediation status because the source bundle names a commit, not a release.
Prepared
Confidence
high
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-150: Exact CWE lookup

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cve · low confidence lookup

CVE-2026-47090 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.6 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
3Timeline events
1ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
4.6CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N1.52.7VulnCheck
2.4CVSS 4.0LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N——VulnCheck

Vulnerability scoring details

Base CVSS 4.0 score

2.4Low
CVSS 4.0 vector shape for CVE-2026-47090Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
jarrodwattsclaude-hud0, 234d9aad919b51326a43bcf90b45ae35c23afc30affected
Weakness

CWE details

CWE-150

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-150 · source CWE mapping

Improper Neutralization of Escape, Meta, or Control Sequences

Improper Neutralization of Escape, Meta, or Control Sequences represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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