CVE-2021-28656 | Apache Zeppelin: CSRF vulnerability in the Credentials page

Cross-Site Request Forgery (CSRF) vulnerability in Credential page of Apache Zeppelin allows an attacker to submit malicious request. This issue affects Apache Zeppelin Apache Zeppelin version 0.9.0 and prior versions.

Published: 2024-04-09 Last update: 2025-05-05 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-28656 is rated Moderate Risk (50.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.76%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2021-28656

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 2026-01-21 1.27% 1.76% +0.49%
2 2025-11-21 1.83% 1.27% -0.56%
3 2025-11-18 — 1.83% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-28656

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
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:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.5 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2021-28656

GitHub Security Advisory for CVE-2021-28656

GHSA-prvg-rh5h-74jr · Severity: medium · Ecosystem: maven — Apache Zeppelin CSRF vulnerability in the Credentials page

Affected software / configurations for CVE-2021-28656

Vendor Product Version Raw CPE
apache zeppelin <= 0.9.0 cpe:2.3:a:apache:zeppelin:*:*:*:*:*:*:*:*

References for CVE-2021-28656

cvelogic Threat Intelligence