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CVE-2025-66492

22
FAUCET Score

CVE-2025-66492 describes a Cross-Site Scripting (XSS) vulnerability in Masa CMS versions 7.2.8 and below, 7.3.1 through 7.3.13, 7.4.0-alpha.1 through 7.4.8, and 7.5.0 through 7.5.1. An attacker can inject arbitrary scripts via an unsanitized 'ajax' URL query parameter, leading to session hijacking, data theft, or defacement. This is a medium severity vulnerability (CVSS 6.1) with a network attack vector and low attack complexity, requiring user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.2.9CPE matchmatch criteria
cpe:2.3:a:masacms:masacms:*:*:*:*:*:*:*:*
>= 7.3.1, < 7.3.14CPE matchmatch criteria
cpe:2.3:a:masacms:masacms:*:*:*:*:*:*:*:*
>= 7.4.0, < 7.4.9CPE matchmatch criteria
cpe:2.3:a:masacms:masacms:*:*:*:*:*:*:*:*
>= 7.5.0, < 7.5.2CPE matchmatch criteria
cpe:2.3:a:masacms:masacms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
11.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 12th percentile among its peer group of 26,236 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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 / MasaCMS/MasaCMS/commit/376c27196b1e2489888b7a000cdf5c45bb85959e
Patch
github.com / MasaCMS/MasaCMS/security/advisories/GHSA-249c-vqwv-43vc
PatchVendor Advisory