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CVE-2021-32827

31
FAUCET Score

CVE-2021-32827 is a critical vulnerability affecting MockServer and related Oracle products, stemming from an overly broad default CORS configuration combined with script injection capabilities. An attacker can exploit this by tricking a developer running MockServer into visiting a malicious website, leading to arbitrary code execution on the developer's machine. With a CVSS score of 9.6 (Critical), this vulnerability has a network attack vector, low attack complexity, and requires user interaction, but can result in high impact to confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:mock-server:mockserver:*:*:*:*:*:*:*:*
1.14.0CPE matchmatch criteria
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.16%
Probability of exploitation in next 30 days
EPSS Percentile
80.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0216 is in the 84th percentile among its peer group of 836 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 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 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

oraclepatch availablevia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-v3cg-h3f6-2242medium

Injection in MockServer

Aug 30, 2021

References

securitylab.github.com / advisories/GHSL-2021-059-mockserver
ExploitThird Party Advisory
oracle.com / security-alerts/cpujan2022.html
PatchThird Party Advisory