CVE-2023-38337Network attack vector

Arbitrary file disclosure via path expansion

Published Jul 14, 2023 · Updated Oct 31, 2024

Path traversal in rswag-api before 2.10.1 allows remote attackers to read arbitrary JSON and YAML files through crafted URL paths. The call middleware passes PATH_INFO as the base argument to File.expand_path, allowing the resolved filename to escape the configured Swagger root before the extension-based response returns its contents. No authentication or user interaction is required; reachable Rails deployments can disclose JSON or YAML configuration and secrets, while this path does not expose other file types.

CVSS severity7.5
High
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in rswag-api before 2.10.1 allows remote attackers to read arbitrary JSON and YAML files through crafted URL paths. The call middleware passes PATH_INFO as the base argument to File.expand_path, allowing the resolved filename to escape the configured Swagger root before the extension-based response returns its contents. No authentication or user interaction is required; reachable Rails deployments can disclose JSON or YAML configuration and secrets, while this path does not expose other file types.

The record

CVE
CVE-2023-38337
Published
Jul 14, 2023
Updated
Oct 31, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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