Google Chrome up to 147.0.7727.138 on macOS Companion Remote Code Execution

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Google Chrome on macOS. This vulnerability affects unknown code of the component Companion. The manipulation results in Remote Code Execution. This vulnerability is known as CVE-2026-7978. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Google Chrome on macOS. Affected is some unknown functionality of the component Companion. The manipulation with an unknown input leads to a remote code execution vulnerability. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Inappropriate implementation in Companion in Google Chrome on Mac prior to 148.0.7778.96 allowed a remote attacker to perform OS-level privilege escalation via malicious network traffic. (Chromium security severity: Medium)

The advisory is available at chromereleases.googleblog.com. This vulnerability is traded as CVE-2026-7978 since 05/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 05/18/2026).

The vulnerability scanner Nessus provides a plugin with the ID 315031 (openSUSE 16 Security Update : chromium (openSUSE-SU-2026:20727-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 148.0.7778.96 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (315031). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 315031
Nessus Name: openSUSE 16 Security Update : chromium (openSUSE-SU-2026:20727-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Chrome 148.0.7778.96

Timelineinfo

05/06/2026 Advisory disclosed
05/06/2026 +0 days CVE reserved
05/06/2026 +0 days VulDB entry created
05/18/2026 +12 days VulDB entry last update

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: chromereleases.googleblog.com
Status: Confirmed

CVE: CVE-2026-7978 (🔒)
GCVE (CVE): GCVE-0-2026-7978
GCVE (VulDB): GCVE-100-361650

Entryinfo

Created: 05/06/2026 21:32
Updated: 05/18/2026 02:59
Changes: 05/06/2026 21:32 (56), 05/18/2026 02:59 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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