No exploitation reportedFix available

CVE-2023-28154

Q: Is CVE-2023-28154 actively exploited?

Active exploitation of CVE-2023-28154 has not been confirmed. Its EPSS score was 1.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-28154?

CVE-2023-28154 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2023-03-13
Fixed in5.76.0

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2023-03-1301:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-28154?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-28154?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Webpack.js webpack

Branch	Affected	Fixed in	Source
5.x	≥ 5.0.0, < 5.76.0	5.76.0	NVD · OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

pcsAlmaLinux:9all versions · fixed in 0.11.3-4.el9_1.3and 1 other package
pcsAlmaLinux:9all versions · fixed in 0.11.4-7.el9_2and 1 other package

Full record on NVD

Fix

Update Webpack.js webpack to 5.76.0

Advisories and patches

github.comPatch
github.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-02-27
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.19.82025-02-27
NVDCVSS 3.19.8read 2026-10-23
FIRST EPSSEPSS score1.4 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2023-03-13
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-28154?

Is CVE-2023-28154 actively exploited?

Active exploitation of CVE-2023-28154 has not been confirmed. Its EPSS score was 1.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-28154?

CVE-2023-28154 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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