Security Resilience

CVE-2023-24044

Open Redirect in Plesk Obsidian ≤ 18.0.49

Public PoCOpen Redirect
Published
22 January 2023
Modified
02 April 2025
CVSS Score v3.1 6.1
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.023 83th percentile
Risk Priority 70 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-24044 is a medium-severity Open Redirect (CWE-601) vulnerability in Plesk Obsidian. Its CVSS base score is 6.1 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 17% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-24044 is a host header injection vulnerability affecting the login page of Plesk Obsidian versions through 18.0.49. The flaw permits an attacker to supply an arbitrary value in the Host request header, which the application reflects without validation and thereby enables an open redirect. The issue is tracked under CWE-601 and carries a CVSS 3.1 base score of 6.1.

An unauthenticated remote attacker can exploit the weakness by crafting a request to the login endpoint that contains a malicious Host header. When a victim follows the resulting URL, the browser is redirected to an attacker-controlled site, allowing phishing or further client-side attacks. User interaction is required, but no privileges are needed on the Plesk instance.

Plesk has stated that the ability to reach the panel via arbitrary domain names is an intended feature and has not issued a corrective patch. Public references, including a Plesk support article and technical write-ups, document the behavior but do not describe additional mitigations. The associated EPSS score has remained near 0.59 since disclosure, indicating sustained but not sharply increasing exploitation interest.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

A Host Header Injection issue on the Login page of Plesk Obsidian through 18.0.49 allows attackers to redirect users to malicious websites via a Host request header. NOTE: the vendor's position is "the ability to use arbitrary domain names to…

more

access the panel is an intended feature."

CWE(s)
CWE-601

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control
Adversaries may obfuscate command and control traffic to make it more difficult to detect.
attack.mitre.org →
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
attack.mitre.org →
T1003.002 Security Account Manager Credential Access
Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through in-memory techniques or through the Windows Registry where the SAM database is stored.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1014 Rootkit Stealth
Adversaries may use rootkits to hide the presence of programs, files, network connections, services, drivers, and other system components.
attack.mitre.org →
T1016.002 Wi-Fi Discovery Discovery
Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-33584Shared CWE-601
CVE-2025-7863Shared CWE-601
CVE-2023-4964Shared CWE-601
CVE-2023-31245Shared CWE-601
CVE-2023-32101Shared CWE-601
CVE-2025-1488Shared CWE-601
CVE-2025-3522Shared CWE-601
CVE-2026-44889Shared CWE-601
CVE-2026-27982Shared CWE-601
CVE-2025-60151Shared CWE-601

Affected Assets

plesk
obsidian
≤ 18.0.49

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.7.2

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.

AT-2 Literacy Training and Awareness
addresses: CWE-601

Security awareness includes verifying URLs and avoiding untrusted redirects that lead to malicious sites.

SI-10 Information Input Validation
addresses: CWE-601

Validates redirect targets and URLs to ensure they conform to allowed destinations.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly require input validation and untrusted-redirect controls that prevent CWE-601.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References