CVE-2020-14326
RESTEasy 4.5.5.Final in hash flooding
A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.
- Record
CVE-2020-14326- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-400
- Updated
- 2026-11-02
CVE List No score
A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.
- Record
CVE-2020-14326- Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2022-1284 No score
A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.
- Record
EUVD-2022-1284- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-37g7-8vjj-pjpj
RESTEasy 4.5.5.Final in hash flooding
A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.
- Record
GHSA-37g7-8vjj-pjpj- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSV
A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.
- Record
CVE-2020-14326- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-37g7-8vjj-pjpj
RESTEasy 4.5.5.Final in hash flooding
A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.
- Record
GHSA-37g7-8vjj-pjpj- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-14326
A vulnerability was found in RESTEasy, where RootNode incorrectly caches routes. This issue results in hash flooding, leading to slower requests with higher CPU time spent searching and adding the entry. This flaw allows an attacker to cause a denial of service.
- Record
UBUNTU-CVE-2020-14326- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.jboss.resteasy:resteasy-bomMaven |
through 4.5.5.Final | 4.5.6.Final |
org.jboss.resteasy:resteasy-bomMaven |
before 4.5.6.Final, plus listed versions 1.2.1.GA1.2.GA2.0-RC12.0-beta-12.0-beta-2 Show 45 moreShow less2.0-beta-32.0-beta-42.0.0.GA2.0.1.GA2.1-beta-12.1.0.GA2.2-RC-12.2-beta-12.2.0.GA2.2.1.GA2.2.2.GA2.2.3.GA2.3-RC12.3-beta-12.3.0.GA2.3.1.GA2.3.10.Final2.3.2.Final2.3.3.Final2.3.4.Final2.3.5.Final2.3.6.Final2.3.7.Final3.0-beta-13.0-beta-23.0-beta-33.0-beta-43.0-beta-53.0-beta-63.0-rc-13.0.0.Final3.0.1.Final3.0.10.Final3.0.11.Final3.0.12.Final3.0.13.Final3.0.14.Final3.0.15.Final3.0.16.Final3.0.17.Final3.0.18.Final3.0.19.Final3.0.2.Final3.0.20.Final3.0.21.Final |
4.5.6.Final |
resteasyUbuntu:25.10 |
All versions, plus listed versions 3.6.2-3 |
None known |
resteasyUbuntu:26.10 |
All versions, plus listed versions 3.6.2-4 |
None known |
resteasyUbuntu:26.04:LTS |
All versions, plus listed versions 3.6.2-33.6.2-4 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-14326 is a high vulnerability (CVSS 7.5) in Red Hat Resteasy, published June 2, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.25%, the 69th percentile. Fixed in org.jboss.resteasy:resteasy-bom 4.5.6.Final.
References
bugzilla.redhat.com/show_bug.cgi?id=1855826
security.netapp.com/advisory/ntap-20210713-0001
nvd.nist.gov/vuln/detail/CVE-2020-14326
github.com/resteasy/Resteasy/pull/2471
ubuntu.com/security/CVE-2020-14326
issues.redhat.com/browse/RESTEASY-2643
cve.org/CVERecord?id=CVE-2020-14326
Left out here: 95 versions. The JSON record has them.