CVE-2020-8135Public exploitNetwork attack vector

Unauthenticated internal network access via unvalidated URL fetch

Published Mar 20, 2020 · Updated Aug 4, 2024

SSRF in Transloadit Uppy Companion before 1.9.3 allows remote attackers to make server-side requests to arbitrary URLs. The get route passes the user-controlled req.body.url value directly to an outbound GET request without validating the destination. An unauthenticated network request can therefore scan reachable networks or interact with internal services using the Companion server's access.

CVSS severity9.8
Critical
EPSS probability1.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Transloadit Uppy Companion before 1.9.3 allows remote attackers to make server-side requests to arbitrary URLs. The get route passes the user-controlled req.body.url value directly to an outbound GET request without validating the destination. An unauthenticated network request can therefore scan reachable networks or interact with internal services using the Companion server's access.

The record

CVE
CVE-2020-8135
Published
Mar 20, 2020
Updated
Aug 4, 2024
Vendor
Transloadit
Product
Uppy Companion
Classifications
CWE-918, CAPEC-664, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2020CVE 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=Fixed Version: 1.9.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Transloadit · Uppy Companionversion=Fixed Version: 1.9.3

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
T1190Exploit Public-Facing Application

Public exploit references

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Technologies

Your stack

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Your stack

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