CVE-2021-21605: jenkins project jenkins
Vulnerability summary
CVE-2021-21605 is a high (CVSS 8.0) vulnerability in jenkins project jenkins. EPSS estimates a 2.25% chance of exploitation in the next 30 days, higher than 82.8% of scored vulnerabilities.
Not severe (CVSS 8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4Timeline
- 13-01-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows users with Agent/Configure permission to choose agent names that cause Jenkins to override the global `config.xml` file.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · MavenEcosystem advisory · calculated8.0HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- OSV · AlpineEcosystem advisory · calculated8.0HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.25%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
Increase +0.03 pp
From 2.22% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- jenkins< 2.275-r0
Jenkins1 product
- jenkins≤ 2.263.1 | ≤ 2.274
Jenkins project1 product
- jenkins≥ unspecified, ≤ 2.274 | ≥ unspecified, ≤ LTS 2.263.1
Org.jenkins-ci.main1 product
- jenkins-core< 2.263.2 | ≥ 2.264, < 2.275
4 vendors · 4 products
References
5 links
- github.com/jenkinsci/jenkinsPACKAGE