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Open Source Point Of Sale CVE-2025-63800

HIGH
Weak Password Requirements (CWE-521)
2025-11-18 cve@mitre.org
7.5
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Password strength requirements
Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.34%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Month Plan within 30 days. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

The password change endpoint in Open Source Point of Sale 3.4.1 allows users to set their account password to an empty string due to missing server-side validation. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-521. The password change endpoint in Open Source Point of Sale 3.4.1 allows users to set their account password to an empty string due to missing server-side validation. When an authenticated user omits or leaves the password and repeat_password parameters empty in the password change request, the backend still returns a successful response and sets the password to an empty string. This effectively disables authentication and may allow unauthorized access to user or administrative accounts. Affected products include: Opensourcepos Open Source Point Of Sale.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
PoC Detected
Dec 19, 2025 - 16:51 vuln.today
Public exploit code
CVE Published
Nov 18, 2025 - 16:15 nvd
HIGH 7.5

DescriptionCVE.org

The password change endpoint in Open Source Point of Sale 3.4.1 allows users to set their account password to an empty string due to missing server-side validation. When an authenticated user omits or leaves the password and repeat_password parameters empty in the password change request, the backend still returns a successful response and sets the password to an empty string. This effectively disables authentication and may allow unauthorized access to user or administrative accounts.

Executive ViewAI

Why It Matters

Organizations using password change endpoint in Open Source Point of Sale 3.4.1 face notable risk from CVE-2025-63800 rated CVSS 7.5. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available, increasing the risk of exploitation. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: High
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.

Threat Intelligence Overview

EPSS Score
0.3%
Top 43% exploitable
Exploit
POC
Public exploit code exists

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

58
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:opensourcepos:open_source_point_of_sale:3.4.1:*:*:*:*:*:*:*
CVE-2026-26746 HIGH POC
8.8 Feb 20

Open Source Point Of Sale versions up to 3.4.1 is affected by unrestricted upload of file with dangerous type (CVSS 8.8)

CVE-2025-68434 HIGH POC
8.8 Dec 17

Cross-site request forgery in Open Source Point of Sale (OSPOS) 3.4.0 through 3.4.1 allows an unauthenticated remote att

CVE-2025-68147 HIGH POC
8.1 Dec 17

Stored cross-site scripting in Open Source Point of Sale (OSPOS) versions 3.4.0 through 3.4.1 allows an attacker with ad

CVE-2025-70093 HIGH POC
7.4 Feb 13

An issue in OpenSourcePOS v3.4.1 allows attackers to execute arbitrary code via returning a crafted AJAX response. [CVSS

CVE-2025-66923 HIGH POC
7.2 Dec 17

Authenticated attackers with high privileges can exploit a stored cross-site scripting (XSS) vulnerability in Open Sourc

CVE-2025-66921 HIGH POC
7.2 Dec 17

Stored cross-site scripting in Open Source Point of Sale 3.4.1 allows an authenticated user who can reach the Create/Upd

CVE-2022-34578 HIGH POC
7.2 Jul 28

Open Source Point of Sale v3.3.7 was discovered to contain an arbitrary file upload vulnerability via the Update Brandin

CVE-2025-70095 MEDIUM POC
6.5 Feb 13

A cross-site scripting (XSS) vulnerability in the item management and sales invoice function of OpenSourcePOS v3.4.1 all

CVE-2025-70091 MEDIUM POC
6.5 Feb 13

A cross-site scripting (XSS) vulnerability in the Customers function of OpenSourcePOS v3.4.1 allows attackers to execute

CVE-2025-70094 MEDIUM POC
6.5 Feb 13

A cross-site scripting (XSS) vulnerability in the Generate Item Barcode function of OpenSourcePOS v3.4.1 allows attacker

CVE-2025-66924 MEDIUM POC
6.1 Dec 17

Open Source Point of Sale v3.4.1 contains a stored cross-site scripting (XSS) vulnerability in the Create/Update Item Ki

CVE-2025-70092 MEDIUM POC
5.5 Feb 12

A cross-site scripting (XSS) vulnerability in the Item Kits function of OpenSourcePOS v3.4.1 allows attackers to execute

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