CVE-2020-36647Network attack vector

File disclosure via mismatched Nginx alias path

Published Jan 8, 2023 · Updated Aug 4, 2024

Path traversal in the Nginx downloads location for Transmission for YunoHost allows remote attackers to read files via crafted URLs. The location omits a trailing slash while its alias targets the completed-downloads directory, letting Nginx resolve traversal segments outside that directory. NVD assesses the route as unauthenticated and requiring no user interaction; the grounded consequence is file disclosure, not file modification or interruption.

CVSS severity5.3
Medium
EPSS probability0.68%
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 the Nginx downloads location for Transmission for YunoHost allows remote attackers to read files via crafted URLs. The location omits a trailing slash while its alias targets the completed-downloads directory, letting Nginx resolve traversal segments outside that directory. NVD assesses the route as unauthenticated and requiring no user interaction; the grounded consequence is file disclosure, not file modification or interruption.

The record

CVE
CVE-2020-36647
Published
Jan 8, 2023
Updated
Aug 4, 2024
Vendor
YunoHost
Product
Transmission for YunoHost
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

YunoHost · Transmission for YunoHostversion=n/a

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.2VulDB CNAAV:A/AC:L/Au:S/C:P/I:P/A:P
5.5VulDB CNACVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
5.5VulDB CNACVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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')
T1190Exploit Public-Facing Application

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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