How severe is CVE-2021-36686?

CVE-2021-36686 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-36686 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36686?

CVE-2021-36686 affects Ymfe Yapi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36686?

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

When was CVE-2021-36686 published?

CVE-2021-36686 was published on 2023-01-26 and last updated on 2026-06-17.

CVE-2021-36686

CVE-2021-36686 is a medium-severity vulnerability in Ymfe Yapi with a CVSS 3.x base score of 5.4. 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 5.4)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ymfe Yapi
Published: 2023-01-26
Last modified: 2026-06-17

Description

Cross Site Scripting (XSS) vulnerability in yapi 1.9.1 allows attackers to execute arbitrary code via the /interface/api edit page.

Frequently asked questions

What is CVE-2021-36686?: Cross Site Scripting (XSS) vulnerability in yapi 1.9.1 allows attackers to execute arbitrary code via the /interface/api edit page.
How severe is CVE-2021-36686?: CVE-2021-36686 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-36686 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36686?: CVE-2021-36686 affects Ymfe Yapi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36686?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36686 published?: CVE-2021-36686 was published on 2023-01-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ymfe:yapi:1.9.1:*:*:*:*:*:*:*

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