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CVE-2024-5840

19
FAUCET Score

CVE-2024-5840 is a medium-severity policy bypass vulnerability in Google Chrome versions prior to 126.0.6478.54, also affecting Fedora distributions. This flaw allows a remote attacker to bypass Cross-Origin Resource Sharing (CORS) discretionary access controls through a specially crafted HTML page. The vulnerability has a CVSS score of 6.5, indicating a network attack vector with low complexity, requiring user interaction, and potentially leading to high integrity impact without affecting confidentiality or availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 126.0.6478.54CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
39CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
40CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*
>= 126.0.6478.54, < 126.0.6478.54CPE match
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 35th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia msrc
Product: Microsoft Edge (Chromium-based)Fixed in: 126.0.2592.56

Vendor Advisories (1)

microsoft2024-Jun/CVE-2024-5840

Chromium: CVE-2024-5840 Policy Bypass in CORS

Jun 11, 2024

References

chromereleases.googleblog.com / 2024/06/stable-channel-update-for-desktop.html
Third Party Advisory
issues.chromium.org / issues/41492103
Permissions Required
lists.fedoraproject.org / archives/list/[email protected]/message/7VXA32LXMNK3DSK3JBRLTBPFUH7LTODU
Third Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/MPU7AB53QQVNTBPGRMJRY5SXJNYWW3FX
Third Party Advisory