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CVE-2023-21974

28
FAUCET Score

CVE-2023-21974 is a critical vulnerability affecting Oracle Application Express Team Calendar Plugin versions 18.2 through 22.1. This easily exploitable flaw allows a low-privileged attacker with network access via HTTP to compromise the plugin, requiring human interaction from a victim. Successful attacks can lead to full takeover of the affected plugin and may significantly impact additional products, resulting in high confidentiality, integrity, and availability impacts, as reflected by its CVSS 3.1 Base Score of 9.0. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion, with two mentions, indicating a degree of awareness.

Impacted Technologies

VendorProductVersion(s)CPE
>= 18.2, <= 22.1CPE matchmatch criteria
cpe:2.3:a:oracle:application_express:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.61%
Probability of exploitation in next 30 days
EPSS Percentile
45.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0061 is in the 48th percentile among its peer group of 265 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.6 Bluesky, 0.3 Mastodon, and 1.6 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)

oraclepatch availablevia nvd_reference
View patch

References

oracle.com / security-alerts/cpujul2023.html
PatchVendor Advisory