CVE-2021-21621: jenkins project jenkins support core plugin
CVSS: 5.3v3.1MediumModified
AliasesGHSA-92pg-8g57-hqpx
Published 24-02-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-21621 is a medium (CVSS 5.3) vulnerability in jenkins project jenkins support core plugin. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 67.9% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (NVD)EPSS score
1.21%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-02-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Jenkins Support Core Plugin 2.72 and earlier provides the serialized user authentication as part of the "About user (basic authentication details only)" information, which can include the session ID of the user creating the support bundle in some configurations.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NSources2 sources · 3.1–5.3
- OSV · MavenEcosystem advisory · calculated3.1LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:NDiffers
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.21%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
0.00 pp
From 1.21% on 20-09-2026
20-09-202620-10-2026
EPSS score1.21%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Jenkins1 product
- support_core≤ 2.72
Jenkins project1 product
- jenkins support core plugin≥ unspecified, ≤ 2.72
Org.jenkins-ci.plugins1 product
- support-core< 2.72.1
3 vendors · 3 products
