CVE-2020-2160Network attack vector

CSRF bypass via inconsistent URL path parsing

Published Mar 25, 2020 · Updated Aug 4, 2024

Cross-site request forgery in Jenkins 2.227 and earlier allows remote attackers to bypass protection for any URL via crafted paths. Jenkins compares one URL-path representation when deciding whether a crumb is required while Stapler dispatches a different representation, creating a bypass. Exploitation requires a victim browser to send the crafted request, and the resulting impact depends on the targeted Jenkins endpoint and the victim's session privileges.

CVSS severity8.8
High
EPSS probability2.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Jenkins 2.227 and earlier allows remote attackers to bypass protection for any URL via crafted paths. Jenkins compares one URL-path representation when deciding whether a crumb is required while Stapler dispatches a different representation, creating a bypass. Exploitation requires a victim browser to send the crafted request, and the resulting impact depends on the targeted Jenkins endpoint and the victim's session privileges.

The record

CVE
CVE-2020-2160
Published
Mar 25, 2020
Updated
Aug 4, 2024
Vendor
Jenkins Project
Product
Jenkins
Classifications
CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 25, 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=unspecified <=2.227
  2. Affected versionversion=unspecified <=LTS 2.204.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · Jenkinsversion=unspecified <=2.227; version=unspecified <=LTS 2.204.5

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

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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