CVE-2021-34429

Exp

For Eclipse Jetty versions 9.4.37-9.4.42, 10.0.1-10.0.5 & 11.0.1-11.0.5, URIs can be crafted using some encoded characters to access the content of the WEB-INF directory and/or bypass some security constraints. This is a variation of the vulnerability reported in CVE-2021-28164/GHSA-v7ff-8wcx-gmc5.

Published: 2021-07-15 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2021-34429 is rated High Exploit Risk (76.2/100): CVSS Medium severity, with high exploitation likelihood (EPSS 99.30%, 100th percentile). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +5.52% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-34429

EDB-ID Source Kind Published Link
50478 exploit_db edb 2021-11-03 Exploit-DB ↗
nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-34429

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 93.78% 99.30% +5.52%
2 2026-03-04 93.70% 93.78% +0.08%
3 2026-03-01 93.70%

Full EPSS history (75 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-34429

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
3.9 1.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
10.0 2.9 [email protected]

Weakness enumeration for CVE-2021-34429

GitHub Security Advisory for CVE-2021-34429

GHSA-vjv5-gp2w-65vm · Severity: medium · Ecosystem: maven — Encoded URIs can access WEB-INF directory in Eclipse Jetty

OS Trackers for CVE-2021-34429

vendor priority summary link
debian not yet assigned CVE-2021-34429 not yet assigned priority: Debian including 1 source packages (jetty9), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2021-34429
redhat medium https://access.redhat.com/security/cve/CVE-2021-34429
suse medium CVE-2021-34429 severity moderate: SUSE including 66 source package names (jetty-annotations-9.4.43-1.2, jetty-annotations-9.4.43-3.12.2, …), 221 product×package rows across 14 product lines (SUSE Linux Enterprise Module for Development Tools 15 SP2, SUSE Linux Enterprise Module for Development Tools 15 SP3, … (14 product lines)): Fixed 221. https://www.suse.com/security/cve/CVE-2021-34429/
ubuntu medium CVE-2021-34429 medium priority: Ubuntu including 1 source packages (jetty9), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 7, ignored 5, DNE 1, needed 1, needs-triage 1, released 1. https://ubuntu.com/security/CVE-2021-34429

Affected software / configurations for CVE-2021-34429

Vendor Product Version Raw CPE
eclipse jetty >= 9.4.37, < 9.4.43 cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
eclipse jetty >= 10.0.1, < 10.0.6 cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
eclipse jetty >= 11.0.1, < 11.0.6 cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
netapp e-series_santricity_os_controller >= 11.0, <= 11.70.1 cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
netapp e-series_santricity_web_services cpe:2.3:a:netapp:e-series_santricity_web_services:-:*:*:*:*:web_services_proxy:*:*
netapp element_plug-in_for_vcenter_server cpe:2.3:a:netapp:element_plug-in_for_vcenter_server:-:*:*:*:*:*:*:*
netapp hci_management_node cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
netapp snap_creator_framework cpe:2.3:a:netapp:snap_creator_framework:-:*:*:*:*:*:*:*
netapp snapcenter_plug-in cpe:2.3:a:netapp:snapcenter_plug-in:-:*:*:*:*:vmware_vsphere:*:*
netapp solidfire cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
oracle autovue_for_agile_product_lifecycle_management 21.0.2 cpe:2.3:a:oracle:autovue_for_agile_product_lifecycle_management:21.0.2:*:*:*:*:*:*:*
oracle communications_cloud_native_core_binding_support_function 1.10.0 cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.10.0:*:*:*:*:*:*:*
oracle communications_cloud_native_core_security_edge_protection_proxy 1.5.0 cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:1.5.0:*:*:*:*:*:*:*
oracle communications_cloud_native_core_service_communication_proxy 1.14.0 cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.14.0:*:*:*:*:*:*:*
oracle communications_cloud_native_core_unified_data_repository 1.14.0 cpe:2.3:a:oracle:communications_cloud_native_core_unified_data_repository:1.14.0:*:*:*:*:*:*:*
oracle communications_diameter_signaling_router >= 8.0.0.0, <= 8.5.0.2 cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*
oracle financial_services_crime_and_compliance_management_studio 8.0.8.2.0 cpe:2.3:a:oracle:financial_services_crime_and_compliance_management_studio:8.0.8.2.0:*:*:*:*:*:*:*
oracle financial_services_crime_and_compliance_management_studio 8.0.8.3.0 cpe:2.3:a:oracle:financial_services_crime_and_compliance_management_studio:8.0.8.3.0:*:*:*:*:*:*:*
oracle rest_data_services < 22.1.1 cpe:2.3:a:oracle:rest_data_services:*:*:*:*:-:*:*:*
oracle retail_eftlink 20.0.1 cpe:2.3:a:oracle:retail_eftlink:20.0.1:*:*:*:*:*:*:*
oracle stream_analytics < 19.1.0.0.6.4 cpe:2.3:a:oracle:stream_analytics:*:*:*:*:*:*:*:*
oracle stream_analytics 19c cpe:2.3:a:oracle:stream_analytics:19c:*:*:*:*:*:*:*

References for CVE-2021-34429

URL Tags
https://github.com/eclipse/jetty.project/security/advisories/GHSA-vjv5-gp2w-65vm Exploit Third Party Advisory
https://lists.apache.org/thread.html/r029c0c6833c8bb6acb094733fd7b75029d633f47a92f1c9d14391fc0%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r02f940c27e997a277ff14e79e84551382e1081e8978b417e0c2b0857%40%3Ccommits.kafka.apache.org%3E
https://lists.apache.org/thread.html/r0626f279ebf65506110a897e3a57ccd4072803ee5434b2503e070398%40%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r2a3ea27cca2ac7352d392b023b72e824387bc9ff16ba245ec663bdc6%40%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r2e32390cb7aedb39069e5b18aa130ca53e766258518faee63c31d3ea%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r3aefe613abce594c71ace50088d2529bbde65d08b8e7ff2c2723aaa1%40%3Cdev.santuario.apache.org%3E
https://lists.apache.org/thread.html/r3c55b0baa4dc38958ae147b2f216e212605f1071297f845e14477d36%40%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r44ea39ca8110de7353bfec88f58aa3aa58a42bb324b8772512ee190c%40%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r46900f74dbb7d168aeac43bf0e7f64825376bb7eb74d31a5b33344ce%40%3Cjira.kafka.apache.org%3E
https://lists.apache.org/thread.html/r46f748c1dc9cf9b6c1c18f6b5bfc3a869907f68f72e17666f2f30f24%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r4727d282b5c2d951057845a46065d59f6e33132edc0a14f41c26b01e%40%3Cdev.kafka.apache.org%3E
https://lists.apache.org/thread.html/r48a93f2bc025acd7c7e341ed3864bfdeb75f0c768d41bc247e1a1f63%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r5678d994d4dd8e7c838eed3bbc1a83a7f6bc62724b0cce67e8892a45%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r679d96f981d4c92724090ed2d5e8565a1d655a72bb315550489f052e%40%3Cjira.kafka.apache.org%3E
https://lists.apache.org/thread.html/r6e6f50c1ce1fb592cb43e913f5be23df104d50751465f8f1952ace0c%40%3Cjira.kafka.apache.org%3E
https://lists.apache.org/thread.html/r721ab6a5fa8d45bec76714b674f5d4caed2ebfeca69ad1d6d4caae6c%40%3Cdev.hbase.apache.org%3E
https://lists.apache.org/thread.html/r74fdc446df551fe89a0a16957a1bfdaad19380e0c1afd30625685a9c%40%3Cjira.kafka.apache.org%3E
https://lists.apache.org/thread.html/r756443e9d50af7e8c3df82e2c45105f452c8e8195ddbc0c00f58d5fe%40%3Ccommits.kafka.apache.org%3E
https://lists.apache.org/thread.html/r763840320a80e515331cbc1e613fa93f25faf62e991974171a325c82%40%3Cdev.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r7dd079fa0ac6f47ba1ad0af98d7d0276547b8a4e005f034fb1016951%40%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r833a4c8bdbbfeb8a2cd38238e7b59f83edd5c1a0e508b587fc551a46%40%3Cissues.hbase.apache.org%3E
https://lists.apache.org/thread.html/r8e6c116628c1277c3cf132012a66c46a0863fa2a3037c0707d4640d4%40%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r90e7b4c42a96d74c219e448bee6a329ab0cd3205c44b63471d96c3ab%40%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r9d245c6c884bbc804a472116d730c1a01676bf24f93206a34923fc64%40%3Ccommits.kafka.apache.org%3E
https://lists.apache.org/thread.html/r9e6158d72ef25077c2dc59fbddade2eacf7d259a2556c97a989f2fe8%40%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/rb33d65c3e5686f2e3b9bb8a032a44163b2f2ad9d31a8727338f213c1%40%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/rc26807be68748b3347decdcd03ae183622244b0b4cb09223d4b7e500%40%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/rcb157f55b9ae41b3076801de927c6fca1669c6d8eaf11a9df5dbeb46%40%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rcea249eb7a0d243f21696e4985de33f3780399bf7b31ea1f6d489b8b%40%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/re01890eef49d4201018f2c97e26536e3e75f441ecdbcf91986c3bc17%40%3Cjira.kafka.apache.org%3E
https://lists.apache.org/thread.html/re3de01414ccf682fe0951205f806dd8e94440798fd64c55a4941de3e%40%3Cjira.kafka.apache.org%3E
https://lists.apache.org/thread.html/re5e9bb535db779506013ef8799dc2a299e77cdad6668aa94c456dba6%40%3Cjira.kafka.apache.org%3E
https://lists.apache.org/thread.html/re850203ef8700cb826534dd4a1cb9f5b07bb8f6f973b39ff7838d3ba%40%3Cissues.hbase.apache.org%3E
https://security.netapp.com/advisory/ntap-20210819-0006/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Patch Third Party Advisory
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