CVE-2023-45105Network attack vector

User redirection via insufficient URL validation

Published Dec 19, 2023 · Updated Apr 28, 2026

Open redirect in SERVIT Software Solutions affiliate-toolkit 3.3.9 and earlier allows remote attackers to redirect users to untrusted sites. The public atkpout.php endpoint insufficiently validates its url parameter and falls back to the publicly derivable MD5 of atkpout.php when the key file is absent. Exploitation requires a victim to follow a crafted link, and only installations lacking atkp-imagereceiver-key.php expose the predictable-key condition.

CVSS severity6.1
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in SERVIT Software Solutions affiliate-toolkit 3.3.9 and earlier allows remote attackers to redirect users to untrusted sites. The public atkpout.php endpoint insufficiently validates its url parameter and falls back to the publicly derivable MD5 of atkpout.php when the key file is absent. Exploitation requires a victim to follow a crafted link, and only installations lacking atkp-imagereceiver-key.php expose the predictable-key condition.

The record

CVE
CVE-2023-45105
Published
Dec 19, 2023
Updated
Apr 28, 2026
Vendor
SERVIT Software Solutions
Product
affiliate-toolkit
Classifications
CWE-601, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record 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=n/a <=3.3.9 changes=[{"at":"3.4.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SERVIT Software Solutions · affiliate-toolkitversion=n/a <=3.3.9 changes=[{"at":"3.4.0","status":"unaffected"}]

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.7PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
3.4WordfenceCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Spearphishing Link

Public exploit references

No public exploit references are available in this record.

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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