Google Chrome up to 148.0.7778.96 on Windows Internationalization external control of assumed-immutable web parameter

CVSS Meta Temp Score
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CTI Interest Score
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5.2$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Google Chrome on Windows. This issue affects some unknown processing of the component Internationalization. Performing a manipulation results in external control of assumed-immutable web parameter. This vulnerability is identified as CVE-2026-8559. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Google Chrome on Windows. This affects an unknown functionality of the component Internationalization. The manipulation with an unknown input leads to a external control of assumed-immutable web parameter vulnerability. CWE is classifying the issue as CWE-472. The web application does not sufficiently verify inputs that are assumed to be immutable but are actually externally controllable, such as hidden form fields. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Integer overflow in Internationalization in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: High)

It is possible to read the advisory at chromereleases.googleblog.com. This vulnerability is uniquely identified as CVE-2026-8559 since 05/14/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 314859 (Linux Distros Unpatched Vulnerability : CVE-2026-8559), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 148.0.7778.168 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (314859) and CERT Bund (WID-SEC-2026-1542). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Google Chrome

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

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

ADP CISA Base Score: 4.3
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: External control of assumed-immutable web parameter
CWE: CWE-472
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: 314859
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-8559

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Chrome 148.0.7778.168

Timelineinfo

05/14/2026 CVE reserved
05/15/2026 +1 days Advisory disclosed
05/15/2026 +0 days VulDB entry created
05/17/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: 504629
Status: Confirmed

CVE: CVE-2026-8559 (🔒)
GCVE (CVE): GCVE-0-2026-8559
GCVE (VulDB): GCVE-100-364071
CERT Bund: WID-SEC-2026-1542 - Google Chrome: Mehrere Schwachstellen

Entryinfo

Created: 05/15/2026 04:40
Updated: 05/17/2026 00:25
Changes: 05/15/2026 04:40 (67), 05/15/2026 21:28 (2), 05/17/2026 00:25 (7)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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