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High, CVSS 8.8

Deserialization of Untrusted Data in swagger-codegen

CVE-2017-1000207GHSA-vgvf-9jh3-fg75

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (io.swagger:swagger-parser 1.0.31; io.swagger:swagger-codegen 2.2.2), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
8.8 · CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
  • CVE-2017-1000207: 1.62% estimated exploitation activity in the next 30 days; percentile 76.13 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

A vulnerability in Swagger-Parser's version <= 1.0.30 and Swagger codegen version <= 2.2.2 yaml parsing functionality results in arbitrary code being executed when a maliciously crafted yaml Open-API specification is parsed. This in particular, affects the 'generate' and 'validate' command in swagger-codegen (<= 2.2.2) and can lead to arbitrary code being executed when these commands are used on a well-crafted yaml specification.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-vgvf-9jh3-fg75

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2017-1000207

Advisory: Deserialization of Untrusted Data in swagger-codegen
IDs: CVE-2017-1000207, GHSA-vgvf-9jh3-fg75
Record: https://patchnext.com/advisories/cve-2017-1000207 (revision 1, source checked 26 Oct 2026, 15:53 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: io.swagger:swagger-parser 1.0.31; io.swagger:swagger-codegen 2.2.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven io.swagger:swagger-parser: affected < 1.0.31; fixed in 1.0.31
- Maven io.swagger:swagger-codegen: affected < 2.2.2; fixed in 2.2.2

## Suggested inspection (read-only)
- Maven io.swagger:swagger-parser: check the installed version with your package manager.
- Maven io.swagger:swagger-codegen: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on io.swagger:swagger-parser, io.swagger:swagger-codegen.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-vgvf-9jh3-fg75 (GitHub-reviewed advisory GHSA-vgvf-9jh3-fg75 lists affected ranges: Maven io.swagger:swagger-parser >=0 =0 <2.2.2)

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