CVE-2022-30636Network attack vector

File disclosure via Windows DirCache path traversal

Published Jul 2, 2024 · Updated Aug 7, 2024

Path traversal in Go autocert before 0.0.0-20220525230936-793ad666bf5e allows remote attackers to read files via HTTP-01 requests. httpTokenCacheKey applies path.Base instead of Windows-aware filepath.Base, preserves backslash traversal segments, appends +http-01, and opens the joined cache path. Exploitation requires a Windows application that uses DirCache for HTTP-01 handling and a target file whose name ends in +http-01.

CVSS severity7.5
High
EPSS probability0.64%
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 Go autocert before 0.0.0-20220525230936-793ad666bf5e allows remote attackers to read files via HTTP-01 requests. httpTokenCacheKey applies path.Base instead of Windows-aware filepath.Base, preserves backslash traversal segments, appends +http-01, and opens the joined cache path. Exploitation requires a Windows application that uses DirCache for HTTP-01 handling and a target file whose name ends in +http-01.

The record

CVE
CVE-2022-30636
Published
Jul 2, 2024
Updated
Aug 7, 2024
Vendor
Go
Product
autocert
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.0.0-20220525230936-793ad666bf5e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go · autocertversion=0 <0.0.0-20220525230936-793ad666bf5e

Published CVSS scores

7.5CISA-ADPCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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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