VDB
CVE-2021-21606
CVE-2021-21606
PUBLISHED
Arbitrary file existence check in file fingerprints in Jenkins
Reported by jenkins · Published January 13, 2021
jenkins-core is fixed in 2.275, 2.274 and 2.263.2 (Maven Central)
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier improperly validates the format of a provided fingerprint ID when checking for its existence allowing an attacker to check for the existence of XML files with a short path.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| org.jenkins-ci.main:jenkins-core | Maven Central | 2.275, 2.274, 2.263.2 |
| jenkins | Alpine | 2.275-r0 |
| jenkins | Arch Linux | 2.275-1 |
| jenkins | Bitnami | 2.274.1 |
| jenkins | jenkins | 2.274, 2.263.1 |
| Jenkins | Jenkins project | unspecified, LTS 2.263.1, 2.274 |
| jenkins | Bitnami | 2.274.1 |
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Jenkins project | Jenkins | 2.242, unspecified, unspecified |
| Jenkins project | Jenkins | 2.242, *, * |
Timeline
- Jan 13, 2021 CVE Published
- Jan 13, 2021 PoC Published
- Apr 14, 2021 EPSS Score (30 in total, the first dated here)
- Dec 13, 2022 CVE Updated
- Mar 17, 2026 Security Advisory
- Aug 26, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-21606
vulnetix vdb fixes CVE-2021-21606Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2021-21606/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart