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Response snapshot Oct 28, 2026, 15:36 UTC

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VulnerabilityCVE-2026-59179

OpenHop is a tool for creating interactive data-flow diagrams.

OpenHop is a tool for creating interactive data-flow diagrams. Prior to 0.3.7, @openhop/server passes unauthenticated flow route parameters from GET /api/flows/:id and DELETE /api/flows/:id in packages/server/src/routes.ts to FlowStore.filePath() in packages/server/src/store.

At a glance

Exploited
Not known
Severity
8.3 High (CVSS 3.1)
Chance of exploitation
Not estimated
Sources
1 source

What to do

Check the vendor advisory for affected versions and fixes.

Read NVD CVE-2026-59179 (opens a new tab)

What happened

OpenHop is a tool for creating interactive data-flow diagrams. Prior to 0.3.7, @openhop/server passes unauthenticated flow route parameters from GET /api/flows/:id and DELETE /api/flows/:id in packages/server/src/routes.ts to FlowStore.filePath() in packages/server/src/store.ts without an identifier allow-list. The router applies decodeURIComponent to the id, and path.

join() then normalizes traversal outside the configured flow directory after appending the .yaml extension. An attacker can read accessible YAML files as YAML-parsed JSON or permanently delete accessible .yaml files outside that directory, exposing configuration or secrets and disrupting dependent services. In packages/server/src/index.

ts, CORS origin: true permits any browser origin, enabling a malicious webpage to target a loopback-bound instance. Docker deployments default to HOST=0.0.0.0 and permit direct unauthenticated network access. This issue is fixed in repository release 0.3.7.

Scores and how they were measured

CVSS base severity

8.3

Version 3.1As of

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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Sources

  1. Primary source

    NVD CVE-2026-59179 (opens a new tab)

    NVD record: description, CVSS (the CNA score is preferred), affected products, and publication date. Not evidence of exploitation.

    Published Checked

  2. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  3. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  4. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 28). OpenHop is a tool for creating interactive data-flow diagrams. (CVE-2026-59179). https://kevwire.com/record/CVE-2026-59179

MLA

"OpenHop is a tool for creating interactive data-flow diagrams. (CVE-2026-59179)." KEVWire, 28 Oct. 2026, kevwire.com/record/CVE-2026-59179.

Chicago

KEVWire. "OpenHop is a tool for creating interactive data-flow diagrams. (CVE-2026-59179)." Last modified October 28, 2026. https://kevwire.com/record/CVE-2026-59179.

Evidence summary (plain text)

OpenHop is a tool for creating interactive data-flow diagrams. (Oct 28, 2026).
OpenHop is a tool for creating interactive data-flow diagrams. Prior to 0.3.7, @openhop/server passes unauthenticated flow route parameters from GET /api/flows/:id and DELETE /api/flows/:id in packages/server/src/routes.ts to FlowStore.filePath() in packages/server/src/store.ts without an identifier allow-list. The router applies decodeURIComponent to the id, and path.join() then normalizes traversal outside the configured flow directory after appending the .yaml extension.
CVSS 8.3 (version 3.1; evidence as of Oct 28, 2026; https://nvd.nist.gov/vuln/detail/CVE-2026-59179).
Sources:
NVD CVE-2026-59179: https://nvd.nist.gov/vuln/detail/CVE-2026-59179
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-10-28T13:56:05.512Z&lastModEndDate=2026-10-28T15:30:58.735Z&resultsPerPage=500&startIndex=500
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-10-28T13:20:57.566Z&lastModEndDate=2026-10-28T14:55:56.021Z&resultsPerPage=500&startIndex=500
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-10-28T12:50:59.682Z&lastModEndDate=2026-10-28T14:20:56.266Z&resultsPerPage=500&startIndex=0
Record ID: CVE-2026-59179.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 28, 2026, 15:30 UTC. Ingestion is not an independent editorial investigation.

NVD status: Deferred. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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Record details

Record detail