XSS in Smartbear Swagger Petstore
CVE-2025-29156
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
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Smartbear Swagger Petstore — versions 1.0.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/swagger-api/swagger-petstore/blob/master/src/main/resources/openapi… (Product)
- www.google.com/url (Product)
- gist.github.com/HouqiyuA/9d2c3f0ba075d01631aff879546e419c (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-29156?
- CVE-2025-29156 is a medium-severity vulnerability in Smartbear Swagger Petstore, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-09-25.
- How severe is CVE-2025-29156?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2025-29156 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.