CVE-2021-21690: jenkins project jenkins
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Vulnerability summary
CVE-2021-21690 is a critical (CVSS 9.8) vulnerability in jenkins project jenkins. EPSS estimates a 2.53% chance of exploitation in the next 30 days, higher than 84.9% of scored vulnerabilities.
Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6Timeline
- 04-11-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · MavenEcosystem advisory · calculated9.0CriticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HDiffers
EPSS trend
Probability
2.53%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.53% 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, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Jenkins1 product
- jenkins< 2.303.3 | < 2.319
Jenkins project1 product
- jenkins≥ unspecified, ≤ 2.318 | ≥ unspecified, ≤ LTS 2.303.2
Org.jenkins-ci.main1 product
- jenkins-core< 2.303.3 | ≥ 2.304, < 2.319
3 vendors · 3 products
