How severe is CVE-2019-8149?

CVE-2019-8149 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-8149 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-8149?

CVE-2019-8149 primarily affects Magento. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-8149?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-8149 published?

CVE-2019-8149 was published on 2019-11-06 and last updated on 2026-06-17.

CVE-2019-8149

CVE-2019-8149 is a critical-severity vulnerability in Magento with a CVSS 3.x base score of 9.8. 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-613.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Magento
Published: 2019-11-06
Last modified: 2026-06-17

Description

Insecure authentication and session management vulnerability exists in Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1. An unauthenticated user can append arbitrary session id that will not be invalidated by subsequent authentication.

Frequently asked questions

What is CVE-2019-8149?: Insecure authentication and session management vulnerability exists in Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1. An unauthenticated user can append arbitrary session id that will not be invalidated by subsequent authentication.
How severe is CVE-2019-8149?: CVE-2019-8149 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-8149 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-8149?: CVE-2019-8149 primarily affects Magento. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-8149?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-8149 published?: CVE-2019-8149 was published on 2019-11-06 and last updated on 2026-06-17.

References

https://magento.com/security/patches/magento-2.3.3-and-2.2.10-security-update

Affected products (4)

cpe:2.3:a:magento:magento:*:*:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:*:*:*:*:open_source:*:*:*
cpe:2.3:a:magento:magento:2.3.2:-:*:*:commerce:*:*:*
cpe:2.3:a:magento:magento:2.3.2:-:*:*:open_source:*:*:*

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