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CVE-2021-28655

23
FAUCET Score

CVE-2021-28655 is an improper input validation vulnerability in the "Move folder to Trash" feature of Apache Zeppelin versions 0.9.0 and earlier, allowing an unauthenticated attacker to delete arbitrary files. With a CVSS score of 6.5 (Medium), this vulnerability has a low attack complexity and can lead to low impact on integrity and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.0CPE matchmatch criteria
cpe:2.3:a:apache:zeppelin:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.54%
Probability of exploitation in next 30 days
EPSS Percentile
72.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0154 is in the 55th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: org.apache.zeppelin:zeppelinFixed in: 0.10.0

Vendor Advisories (1)

mavenGHSA-gm67-h5wr-w3cvmedium

Apache Zeppelin Improper Input Validation vulnerability

Jul 6, 2023

References

lists.apache.org / thread/bxs056g3xlsofz0jb3wny9dw4llwptd2
Mailing ListVendor Advisory