How severe is CVE-2025-29156?

CVE-2025-29156 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-29156 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-29156?

CVE-2025-29156 affects Smartbear Swagger Petstore. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-29156?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-29156 have an EU (EUVD) identifier?

Yes. CVE-2025-29156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31152.

When was CVE-2025-29156 published?

CVE-2025-29156 was published on 2025-09-25 and last updated on 2026-06-17.

CVE-2025-29156

CVE-2025-29156 is a medium-severity vulnerability in Smartbear Swagger Petstore with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31152
Weakness: CWE-79
Affected product: Smartbear Swagger Petstore
Published: 2025-09-25
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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
How severe is CVE-2025-29156?: CVE-2025-29156 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-29156 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-29156?: CVE-2025-29156 affects Smartbear Swagger Petstore. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-29156?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-29156 have an EU (EUVD) identifier?: Yes. CVE-2025-29156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31152.
When was CVE-2025-29156 published?: CVE-2025-29156 was published on 2025-09-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:smartbear:swagger_petstore:1.0.7:*:*:*:*:*:*:*

More vulnerabilities in Smartbear Swagger Petstore

CVE-2025-29157 — Medium (CVSS 6.5): An issue in petstore v.1.0.7 allows a remote attacker to execute arbitrary code via accessing a non-existent…
CVE-2025-29155 — Medium (CVSS 6.5): An issue in petstore v.1.0.7 allows a remote attacker to execute arbitrary code via the DELETE endpoint

All CVEs affecting Smartbear Swagger Petstore →

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