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CVE-2023-28110

29
FAUCET Score

CVE-2023-28110 is a critical command injection vulnerability affecting Jumpserver's Koko component, specifically versions prior to 2.28.8. An attacker can exploit this by using illegal tokens when connecting to a Kubernetes cluster, leading to the execution of dangerous commands within the Koko container. This vulnerability carries a CVSS score of 9.9 (Critical) due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.28.8CPE matchmatch criteria
cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:fit2cloud:koko:-:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

5.7MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.5
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 60th percentile among its peer group of 1,124 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / jumpserver/jumpserver/releases/tag/v2.28.8
PatchRelease Notes
github.com / jumpserver/jumpserver/security/advisories/GHSA-6x5p-jm59-jh29
ExploitVendor Advisory