How severe is CVE-2021-36039?

CVE-2021-36039 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-36039 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36039?

CVE-2021-36039 primarily affects Adobe Adobe Commerce. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-36039?

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

When was CVE-2021-36039 published?

CVE-2021-36039 was published on 2021-09-01 and last updated on 2026-06-17.

CVE-2021-36039

CVE-2021-36039 is a medium-severity vulnerability in Adobe Adobe Commerce with a CVSS 3.x base score of 6.5. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Adobe Adobe Commerce
Published: 2021-09-01
Last modified: 2026-06-17

Description

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability via the `quoteId` parameter. An attacker can abuse this vulnerability to disclose sensitive information.

Frequently asked questions

What is CVE-2021-36039?: Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability via the `quoteId` parameter. An attacker can abuse this vulnerability to disclose sensitive information.
How severe is CVE-2021-36039?: CVE-2021-36039 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-36039 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36039?: CVE-2021-36039 primarily affects Adobe Adobe Commerce. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-36039?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36039 published?: CVE-2021-36039 was published on 2021-09-01 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/magento/apsb21-64.html

Affected products (4)

cpe:2.3:a:adobe:adobe_commerce:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:adobe_commerce:2.4.2:p1:*:*:*:*:*:*
cpe:2.3:a:adobe:magento_open_source:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:magento_open_source:2.4.2:p1:*:*:*:*:*:*

More vulnerabilities in Adobe Adobe Commerce

CVE-2021-36042 — Critical (CVSS 9.1): Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an…
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CVE-2021-36040 — Critical (CVSS 9.1): Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an…
CVE-2021-36035 — Critical (CVSS 9.1): Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an…
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CVE-2021-36033 — Critical (CVSS 9.1): Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an XML…

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