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01 Record

CVE-2020-2101

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier did not use a constant-time comparison function for validating connection secrets, which could potentially allow an attacker to use a timing attack

UnratedPUBLISHEDCNA: jenkins
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier did not use a constant-time comparison function for validating connection secrets, which could potentially allow an attacker to use a timing attack

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.36% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 71.6% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-01-29 15:15Z6 YR AGO
Last updated
2024-08-04 07:01Z2 YR AGO
Reserved
2019-12-05
Assigning CNA
jenkins
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
bca1ea04e94ce559b7bf01cbdebea7ebad4653b447b96db8403ac40c62902fee

05 Affected products

VendorProductVersionsPlatforms
Jenkins projectJenkins<= 2.218, <= LTS 2.204.1—

06 References