What is the CVSS score of CVE-2025-29156?

CVE-2025-29156 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Swagger Petstore are affected by CVE-2025-29156?

Organizations using Cross Site Scripting vulnerability in petstore v.1.0.7 should be aware of moderate risk from CVE-2025-29156, a cross-site scripting vulnerability rated CVSS 6.1.

How to fix or mitigate CVE-2025-29156?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Swagger Petstore CVE-2025-29156

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-09-25 cve@mitre.org

RCE XSS Swagger Petstore

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:14 vuln.today

CVE Published

Sep 25, 2025 - 19:15 nvd

MEDIUM 6.1

DescriptionCVE.org

Cross Site Scripting vulnerability in petstore v.1.0.7 allows a remote attacker to execute arbitrary code via a crafted script to the /api/v3/pet

AnalysisAI

Cross Site Scripting vulnerability in petstore v.1.0.7 allows a remote attacker to execute arbitrary code via a crafted script to the /api/v3/pet. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cross Site Scripting vulnerability in petstore v.1.0.7 allows a remote attacker to execute arbitrary code via a crafted script to the /api/v3/pet Affected products include: Smartbear Swagger Petstore.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.