CVE-2026-57294: Jenkins EC2 Fleet Plugin · Missing Authorization
Affects Jenkins EC2 Fleet PluginSource CVE Database V5
Not known to be exploited · CVSS 5.4 Medium · patch available : update Jenkins EC2 Fleet Plugin when convenient.
Data as of 6 Nov 2026, 23:24 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 24 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Jenkins ProjectJenkins EC2 Fleet Plugin | Affected
| Fixed in– |
AI-suggested
The vendor manages remediation for this cloud-hosted service. A patch is available, and users should verify with the Jenkins Project advisory for the latest update and ensure their Jenkins EC2 Fleet Plugin is updated to a fixed version. Until then, restrict Overall/Read permissions to trusted users only.
Description
A missing permission check in Jenkins EC2 Fleet Plugin 4.2.3.539.v8fedff2a_81c3 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing AWS credentials stored in Jenkins.