CVE-2021-24749Public exploitNetwork attack vector

Arbitrary link and group deletion via nonce omission

Published Nov 29, 2021 · Updated Aug 3, 2024

Cross-site request forgery in KaizenCoders URL Shortify before 1.5.1 allows remote attackers to delete links or groups via an administrator's browser. The us_links and us_groups admin handlers accept bulk_delete actions and attacker-chosen link_ids or group_ids arrays without validating a CSRF nonce. Exploitation requires a logged-in administrator to open a crafted URL; successful requests delete the selected links or groups, with no broader impact reported.

CVSS severity4.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in KaizenCoders URL Shortify before 1.5.1 allows remote attackers to delete links or groups via an administrator's browser. The us_links and us_groups admin handlers accept bulk_delete actions and attacker-chosen link_ids or group_ids arrays without validating a CSRF nonce. Exploitation requires a logged-in administrator to open a crafted URL; successful requests delete the selected links or groups, with no broader impact reported.

The record

CVE
CVE-2021-24749
Published
Nov 29, 2021
Updated
Aug 3, 2024
Vendor
KaizenCoders
Product
URL Shortify
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 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=1.5.1 <1.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

KaizenCoders · URL Shortifyversion=1.5.1 <1.5.1

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

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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