HOMEVULNERABILITIESCVE-2021-28163
LOW

CVE-2021-28163

CWE-200Published: April 1, 2021· Updated: Jun 17, 2026

2.7
CVSS v3.1

Official Description

In Eclipse Jetty 9.4.32 to 9.4.38, 10.0.0.beta2 to 10.0.1, and 11.0.0.beta2 to 11.0.1, if a user uses a webapps directory that is a symlink, the contents of the webapps directory is deployed as a static webapp, inadvertently serving the webapps themselves and anything else that might be in that directory.

NVD Source

Technical Analysis

CVE-2021-28163 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

Apache2 product(s)
ignitesolr
eclipse1 product(s)
jetty
Fedora1 product(s)
fedora
netapp11 product(s)
cloud managere-series performance analyzere-series santricity os controllere-series santricity web serviceselement plug-in for vcenter serversantricity cloud connectorsnapcentersnapcenter plug-instorage replication adapter for clustered data ontapvasa provider for clustered data ontapvirtual storage console
Oracle8 product(s)
autovue for agile product lifecycle managementbanking apisbanking digital experiencecommunications element managercommunications services gatekeepercommunications session report managercommunications session route managersiebel core - automation
Source: NVD CPE · 31 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://www.oracle.com/security-alerts/cpujan2022.html
PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html
PATCHhttps://www.oracle.com/security-alerts/cpujan2022.html
PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html
ADVISORYhttps://github.com/eclipse/jetty.project/security/advisories/GHSA-j6qj-j888-vvgq
ADVISORYhttps://security.netapp.com/advisory/ntap-20210611-0006/
ADVISORYhttps://www.oracle.com/security-alerts/cpuapr2022.html
ADVISORYhttps://github.com/eclipse/jetty.project/security/advisories/GHSA-j6qj-j888-vvgq
ADVISORYhttps://security.netapp.com/advisory/ntap-20210611-0006/
ADVISORYhttps://www.oracle.com/security-alerts/cpuapr2022.html

All References (52)

→
https://github.com/eclipse/jetty.project/security/advisories/GHSA-j6qj-j888-vvgqExploit · Third Party Advisory
→
https://lists.apache.org/thread.html/r0841b06b48324cfc81325de3c05a92e53f997185f9d71ff47734d961%40%3Cissues.solr.apache.org%3E
→
https://lists.apache.org/thread.html/r111f1ce28b133a8090ca4f809a1bdf18a777426fc058dc3a16c39c66%40%3Cissues.solr.apache.org%3E
→
https://lists.apache.org/thread.html/r2ea2f0541121f17e470a0184843720046c59d4bde6d42bf5ca6fad81%40%3Cissues.solr.apache.org%3E
→
https://lists.apache.org/thread.html/r4a66bfbf62281e31bc1345ebecbfd96f35199eecd77bfe4e903e906f%40%3Cissues.ignite.apache.org%3E
→
https://lists.apache.org/thread.html/r4b1fef117bccc7f5fd4c45fd2cabc26838df823fe5ca94bc42a4fd46%40%3Cissues.ignite.apache.org%3E
→
https://lists.apache.org/thread.html/r5b3693da7ecb8a75c0e930b4ca26a5f97aa0207d9dae4aa8cc65fe6b%40%3Cissues.ignite.apache.org%3E
→
https://lists.apache.org/thread.html/r67c4f90658fde875521c949448c54c98517beecdc7f618f902c620ec%40%3Cissues.zookeeper.apache.org%3E
→
https://lists.apache.org/thread.html/r6ac9e263129328c0db9940d72b4a6062e703c58918dd34bd22cdf8dd%40%3Cissues.ignite.apache.org%3E
→
https://lists.apache.org/thread.html/r780c3c210a05c5bf7b4671303f46afc3fe56758e92864e1a5f0590d0%40%3Cjira.kafka.apache.org%3E
→
https://lists.apache.org/thread.html/r787e47297a614b05b99d01b04c8a1d6c0cafb480c9cb7c624a6b8fc3%40%3Cissues.solr.apache.org%3E
→
https://lists.apache.org/thread.html/r8a1a332899a1f92c8118b0895b144b27a78e3f25b9d58a34dd5eb084%40%3Cnotifications.zookeeper.apache.org%3E
→
https://lists.apache.org/thread.html/r9974f64723875052e02787b2a5eda689ac5247c71b827d455e5dc9a6%40%3Cissues.solr.apache.org%3E
→
https://lists.apache.org/thread.html/rbc075a4ac85e7a8e47420b7383f16ffa0af3b792b8423584735f369f%40%3Cissues.solr.apache.org%3E
→
https://lists.apache.org/thread.html/rbefa055282d52d6b58d29a79fbb0be65ab0a38d25f00bd29eaf5e6fd%40%3Cnotifications.zookeeper.apache.org%3E

Quick Facts

CVE IDCVE-2021-28163
CVSS Score2.7 / 10
SeverityLOW
WeaknessCWE-200
CISA KEVNo
Affected5 vendor(s)
PublishedApr 1, 2021

Related CVEs (CWE-200)

CVE-2011-0376
10.0
CVE-2013-0693
10.0
CVE-2026-40965
10.0
CVE-2008-1252
10.0
CVE-2025-22612
10.0
CVE-2020-13702
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-28163 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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