CVE-2021-24739Public exploitNetwork attack vector

Private-post disclosure via user-controlled duplication ID

Published Dec 21, 2021 · Updated Aug 3, 2024

Authorization bypass in ShapedPlugin LLC Logo Carousel before 3.4.2 allows remote authenticated users to view others' private posts. The Carousel Duplication action accepts the post query parameter as the source object identifier and clones the referenced post without checking whether the caller may access that post. Contributor-level access and a valid duplication nonce are required; changing the post ID creates a viewable copy of another user's private post.

CVSS severity8.1
High
EPSS probability1.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in ShapedPlugin LLC Logo Carousel before 3.4.2 allows remote authenticated users to view others' private posts. The Carousel Duplication action accepts the post query parameter as the source object identifier and clones the referenced post without checking whether the caller may access that post. Contributor-level access and a valid duplication nonce are required; changing the post ID creates a viewable copy of another user's private post.

The record

CVE
CVE-2021-24739
Published
Dec 21, 2021
Updated
Aug 3, 2024
Vendor
ShapedPlugin LLC
Product
Logo Carousel
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 21, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.4.2 <3.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ShapedPlugin LLC · Logo Carouselversion=3.4.2 <3.4.2

Published CVSS scores

5.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:N
8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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