CVE-2020-27822
No exploitation reported by the sources we read.
- Published2020-12-08
- Fixed in21.0.1 · 20.0.2 · 20.0.1 · 19.1.1 · 19.0.1
- WeaknessCWE-401
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A flaw was found in Wildfly affecting versions 19.0.0.Final, 19.1.0.Final, 20.0.0.Final, 20.0.1.Final, and 21.0.0.Final. When an application uses the OpenTracing API's java-interceptors, there is a possibility of a memory leak. This flaw allows an attacker to impact the availability of the server. The highest threat from this vulnerability is to system availability.
Timeline
dates in UTC- 2020-12-0801:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-27822?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-27822?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
OSV · NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 21.0 | ≥ 21.0.0, < 21.0.1 | 21.0.1 | OSV |
| 20.0 | ≥ 20.0.1, < 20.0.2 | 20.0.2 | OSV |
| 20.0 | ≥ 20.0.0, < 20.0.1 | 20.0.1 | OSV |
| 19.1 | ≥ 19.1.0, < 19.1.1 | 19.1.1 | OSV |
| 19.0 | ≥ 19.0.0, < 19.0.1 | 19.0.1 | OSV |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 19.0 | = 19.0.0 | no fix published | NVD |
| 19.1 | = 19.1.0 | no fix published | NVD |
| 20.0 | = 20.0.0 | no fix published | NVD |
| 20.0 | = 20.0.1 | no fix published | NVD |
| 21.0 | = 21.0.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 22.0 | ≥ 22.0.0.Alpha1, < 22.0.0.Beta1 | 22.0.0.Beta1 | OSV |
| 21.0 | ≥ 19.0.0.Final, < 21.0.2.Final | 21.0.2.Final | OSV |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update wildfly to 21.0.1 · 20.0.2 · 20.0.1 · 19.1.1 · 19.0.1
Advisories and patches
- bugzilla.redhat.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.15.9read 2026-10-23
- NVDCVSS 2.07.1read 2026-10-23
- CNAweakness (CWE)CWE-401read 2026-10-23
- FIRST EPSSEPSS score1.1 %2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2020-12-08
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-27822?
Is CVE-2020-27822 actively exploited?
What is the CVSS score for CVE-2020-27822?
Running wildfly? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.