How severe is CVE-2023-28154?

CVE-2023-28154 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-2023-28154 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28154?

CVE-2023-28154 affects Webpack.js Webpack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28154?

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-2023-28154 published?

CVE-2023-28154 was published on 2023-03-13 and last updated on 2026-06-17.

CVE-2023-28154

CVE-2023-28154 is a critical-severity vulnerability in Webpack.js Webpack 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.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Webpack.js Webpack
Published: 2023-03-13
Last modified: 2026-06-17

Description

Webpack 5 before 5.76.0 does not avoid cross-realm object access. ImportParserPlugin.js mishandles the magic comment feature. An attacker who controls a property of an untrusted object can obtain access to the real global object.

Frequently asked questions

What is CVE-2023-28154?: Webpack 5 before 5.76.0 does not avoid cross-realm object access. ImportParserPlugin.js mishandles the magic comment feature. An attacker who controls a property of an untrusted object can obtain access to the real global object.
How severe is CVE-2023-28154?: CVE-2023-28154 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-2023-28154 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28154?: CVE-2023-28154 affects Webpack.js Webpack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28154?: 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-2023-28154 published?: CVE-2023-28154 was published on 2023-03-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webpack.js:webpack:*:*:*:*:*:node.js:*:*

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