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CVE-2023-0291

29
FAUCET Score

CVE-2023-0291 is a critical authorization bypass vulnerability affecting the Quiz And Survey Master plugin for WordPress, specifically versions up to and including 8.0.8. This flaw allows unauthenticated attackers to delete arbitrary media files due to a missing capability check in the qsm_remove_file_fd_question AJAX action. Rated with a CVSS score of 9.1 (Critical), this vulnerability is easily exploitable over the network with low attack complexity, requiring no user interaction or privileges, and can lead to high impact on data integrity and availability. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or Nuclei. The vulnerability has received minimal community discussion and media coverage, suggesting low public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.0.8CPE matchmatch criteria
cpe:2.3:a:expresstech:quiz_and_survey_master:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.03%
Probability of exploitation in next 30 days
EPSS Percentile
79.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0203 is in the 68th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/171011/wpqsm808-xsrf.txt
Not ApplicableVDB Entry
plugins.trac.wordpress.org / changeset/2834471/quiz-master-next
Patch
wordpress.org / plugins/quiz-master-next
Product
wordfence.com / threat-intel/vulnerabilities/id/68110321-db1a-4634-98cd-0afd3ec933b8
Third Party Advisory