CVE-2026-7958
published 2026-05-06CVE-2026-7958: Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension…
PriorityP426medium5.4CVSS 3.1
AVNACLPRNUIRSUCLILAN
EPSS
0.14%
4.0th percentile
Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted Chrome Extension. (Chromium security severity: Medium)
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chrome | < 148.0.7778.96 | 148.0.7778.96 | |
| chrome | >= 148.0.7778.96 < 148.0.7778.96 | 148.0.7778.96 | |
| chrome_desktop | — | — |
CVSS provenance
nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
cvelistv5v3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
vendor_redhat6.6MEDIUM
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CVEList
CVE-2026-7958: Inappropriate implementation in ServiceWorker in Google Chrome prior to 148
cvelistv5·2026-05-06·CVSS 5.4
CVE-2026-7958 [MEDIUM] CVE-2026-7958: Inappropriate implementation in ServiceWorker in Google Chrome prior to 148
Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted Chrome Extension. (Chromium security severity: Medium)
GHSA
GHSA-fmhc-h3p5-rqcp: Inappropriate implementation in ServiceWorker in Google Chrome prior to 148
ghsa_unreviewed·2026-05-06
CVE-2026-7958 [MEDIUM] CWE-79 GHSA-fmhc-h3p5-rqcp: Inappropriate implementation in ServiceWorker in Google Chrome prior to 148
Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted Chrome Extension. (Chromium security severity: Medium)
VulDB
Google Chrome up to 147.0.7727.138 ServiceWorker cross site scripting (ID 496632)
vuldb·2026-05-06
CVE-2026-7958 [CRITICAL] Google Chrome up to 147.0.7727.138 ServiceWorker cross site scripting (ID 496632)
A vulnerability classified as critical has been found in Google Chrome. The affected element is an unknown function of the component ServiceWorker. This manipulation causes cross site scripting.
This vulnerability is registered as CVE-2026-7958. Remote exploitation of the attack is possible. No exploit is available.
It is recommended to upgrade the affected component.
Chrome
Stable Channel Update for Desktop: CVE-2026-7958
vendor_chrome·2026-05-05
CVE-2026-7958 [MEDIUM] Stable Channel Update for Desktop: CVE-2026-7958
Stable Channel Update for Desktop
CVE-2026-7958: Inappropriate implementation in ServiceWorker. Reported by Google on 2026-03-26 [N/A][ 496645205 ] Medium CVE-2026-7959: Inappropriate implementation in Navigation
Reported by Google on 2026-03-26 [N/A][ 497007825 ] Medium CVE-2026-7960: Race in Speech
Severity: medium
Red Hat
chromium-browser: Inappropriate implementation in ServiceWorker
vendor_redhat·2026-05-05·CVSS 6.6
CVE-2026-7958 [MEDIUM] CWE-79 chromium-browser: Inappropriate implementation in ServiceWorker
chromium-browser: Inappropriate implementation in ServiceWorker
An inappropriate implementation flaw was found in the ServiceWorker component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=496632973
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-7958 chromium-browser: Inappropriate implementation in ServiceWorker
bugzilla·2026-05-06
CVE-2026-7958 [MEDIUM] CVE-2026-7958 chromium-browser: Inappropriate implementation in ServiceWorker
CVE-2026-7958 chromium-browser: Inappropriate implementation in ServiceWorker
Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted Chrome Extension. (Chromium security severity: Medium)
Rapid7
Patch Tuesday - May 2026
blogs_rapid7·2026-05-13·CVSS 10.0
CVE-2026-41089 [CRITICAL] Patch Tuesday - May 2026
Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday . Microsoft is not aware of exploitation in the wild or public disclosure for any of these vulnerabilities. So far this month, Microsoft has provided patches to address 133 browser vulnerabilities, which are not included in the Patch Tuesday count above.
## Windows Netlogon: critical RCE
Anyone responsible for securing a domain controller should prioritize remediation of CVE-2026-41089 , which is a critical stack-based buffer overflow in Windows Netlogon with a CVSS v3 base score of 9.8. Exploitation leads to execution in the context of the Netlogon service, so that’s SYSTEM privileges on the domain controller. For most pentesters, that’s the point at which the customer report more or less writes itself. No privileges
2026-05-06
Published