What is CVE-2021-36720?

PineApp - Mail Secure - Attacker sending a request to :/blocking.php?url= alert(1) and stealing cookies .

How severe is CVE-2021-36720?

CVE-2021-36720 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-2021-36720 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36720?

CVE-2021-36720 affects Pineapp Mail Secure. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36720?

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

When was CVE-2021-36720 published?

CVE-2021-36720 was published on 2021-12-08 and last updated on 2026-06-17.

CVE-2021-36720

CVE-2021-36720 is a medium-severity vulnerability in Pineapp Mail Secure 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)
CVSS v2: 4.3
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Pineapp Mail Secure
Published: 2021-12-08
Last modified: 2026-06-17

Description

PineApp - Mail Secure - Attacker sending a request to :/blocking.php?url=<script>alert(1)</script> and stealing cookies .

Frequently asked questions

What is CVE-2021-36720?: PineApp - Mail Secure - Attacker sending a request to :/blocking.php?url=<script>alert(1)</script> and stealing cookies .
How severe is CVE-2021-36720?: CVE-2021-36720 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-2021-36720 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36720?: CVE-2021-36720 affects Pineapp Mail Secure. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36720?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36720 published?: CVE-2021-36720 was published on 2021-12-08 and last updated on 2026-06-17.

References

https://www.gov.il/en/departments/faq/cve_advisories

Affected products (1)

cpe:2.3:a:pineapp:mail_secure:*:*:*:*:*:*:*:*

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