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CVE-2023-4879

19
FAUCET Score

CVE-2023-4879 is a stored Cross-site Scripting (XSS) vulnerability affecting instantsoft/icms2 prior to version 2.16.1-git. This medium-severity vulnerability (CVSS 4.8) requires high privileges and user interaction, allowing an attacker to inject malicious scripts that could lead to limited confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.16.1CPE matchmatch criteria
cpe:2.3:a:instantcms:instantcms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

3.5LOW

CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
0.9
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 34th percentile among its peer group of 4,931 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / instantsoft/icms2/commit/d0aeeaf5979fbdbf80dc3a3227d6c58442ab7487
Patch
huntr.dev / bounties/7df6b167-3c39-4563-9b8a-33613e25cf27
ExploitIssue TrackingPatchThird Party Advisory