Cyber Resilience

CVE-2023-1911

MediumPublic PoC

Published: 02 May 2023

Published
02 May 2023
Modified
30 January 2025
KEV Added
—
Patch
—
CVSS Score v3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0019 40.3th percentile
Risk Priority 9 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-1911 is a medium-severity Authorization Bypass Through User-Controlled Key (CWE-639) vulnerability in Creativethemes Blocksy Companion. Its CVSS base score is 4.3 (Medium).

Operationally, ranked at the 40.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

The Blocksy Companion WordPress plugin before 1.8.82 does not ensure that posts to be accessed via a shortcode are already public and can be viewed, allowing any authenticated users, such as subscriber to access draft posts for example

CWE(s)
CWE-639

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

creativethemes
blocksy companion
≤ 1.8.82

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-24 Access Control Decisions
addresses: CWE-639

Per-request decision making makes it harder to bypass authorization using user-controlled keys without proper validation in the decision process.

AC-3 Access Enforcement
addresses: CWE-639

Consistent enforcement of approved authorizations makes bypassing via user-controlled keys ineffective.

References