How severe is CVE-2020-9690?

CVE-2020-9690 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-9690 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9690?

CVE-2020-9690 primarily affects Magento. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-9690?

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

When was CVE-2020-9690 published?

CVE-2020-9690 was published on 2020-07-29 and last updated on 2026-06-17.

CVE-2020-9690

CVE-2020-9690 is a medium-severity vulnerability in Magento with a CVSS 3.x base score of 4.2. 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-203.

Key facts

Severity: Medium (CVSS 3.x base score 4.2)
CVSS v2: 3.5
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Magento
Published: 2020-07-29
Last modified: 2026-06-17

Description

Magento versions 2.3.5-p1 and earlier, and 2.3.5-p1 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.

Frequently asked questions

What is CVE-2020-9690?: Magento versions 2.3.5-p1 and earlier, and 2.3.5-p1 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.
How severe is CVE-2020-9690?: CVE-2020-9690 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-9690 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9690?: CVE-2020-9690 primarily affects Magento. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-9690?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-9690 published?: CVE-2020-9690 was published on 2020-07-29 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/magento/apsb20-47.html

Affected products (6)

cpe:2.3:a:magento:magento:*:*:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:*:*:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.3.5:-:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.3.5:-:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.3.5:p1:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.3.5:p1:*:*:open_source:*:*:*

More vulnerabilities in Magento

CVE-2020-9664 — Critical (CVSS 9.8): Magento versions 1.14.4.5 and earlier, and 1.9.4.5 and earlier have a php object injection vulnerability. Successful…
CVE-2020-9632 — Critical (CVSS 9.8): Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have a…
CVE-2020-9631 — Critical (CVSS 9.8): Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have a…
CVE-2020-9630 — Critical (CVSS 9.8): Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have a…
CVE-2020-9585 — Critical (CVSS 9.8): Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have a…
CVE-2020-9583 — Critical (CVSS 9.8): Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have a…

All CVEs affecting Magento →

Other CWE-203 (Observable Discrepancy) vulnerabilities

CVE-2019-25337 — Critical (CVSS 9.8): OwnCloud 8.1.8 contains a username enumeration vulnerability that allows remote attackers to discover user accounts by…
CVE-2026-23519 — Critical (CVSS 9.8): RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in…
CVE-2025-27667 — Critical (CVSS 9.8): Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 Application 20.0.1923 allows Administrative…
CVE-2024-25714 — Critical (CVSS 9.8): In Rhonabwy through 1.1.13, HMAC signature verification uses a strcmp function that is vulnerable to side-channel…
CVE-2024-25191 — Critical (CVSS 9.8): php-jwt 1.0.0 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass…
CVE-2024-25190 — Critical (CVSS 9.8): l8w8jwt 2.2.1 uses memcmp (which is not constant time) to verify authentication, which makes it easier to bypass…

Browse all CWE-203 (Observable Discrepancy) vulnerabilities →