CVE-2026-12437
published 2026-06-17CVE-2026-12437: Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to…
PriorityP346high8.3CVSS 3.1
AVNACHPRNUIRSCCHIHAH
EPSS
0.30%
22.6th percentile
Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chrome | < 149.0.7827.155 | 149.0.7827.155 | |
| chrome | >= 149.0.7827.155 < 149.0.7827.155 | 149.0.7827.155 | |
| chrome_desktop | — | — |
CVSS provenance
nvdv3.18.3HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
cvelistv5v3.18.3HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
vendor_redhat8.3HIGH
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GHSA
Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted
ghsa_unreviewed·2026-06-17
CVE-2026-12437 [HIGH] CWE-416 Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted
Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
CVEList
CVE-2026-12437: Use after free in WebShare in Google Chrome on Windows prior to 149
cvelistv5·2026-06-17·CVSS 8.3
CVE-2026-12437 [HIGH] CWE-416 CVE-2026-12437: Use after free in WebShare in Google Chrome on Windows prior to 149
Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
Red Hat
chromium-browser: chromium-browser: Use after free in WebShare
vendor_redhat·2026-06-17·CVSS 8.3
CVE-2026-12437 [HIGH] CWE-825 chromium-browser: chromium-browser: Use after free in WebShare
chromium-browser: chromium-browser: Use after free in WebShare
Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
An use after free flaw was found in the WebShare component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=516496659
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Chrome
Stable Channel Update for Desktop: CVE-2026-12437
vendor_chrome·2026-06-16
CVE-2026-12437 [CRITICAL] Stable Channel Update for Desktop: CVE-2026-12437
Stable Channel Update for Desktop
CVE-2026-12437: Use after free in WebShare. Reported by Google on 2026-05-25 [N/A][ 516947912 ] Critical CVE-2026-12438: Inappropriate implementation in WebView
Reported by Google on 2026-05-27 [N/A][ 519728275 ] Critical CVE-2026-12439: Use after free in Digital Credentials
Severity: critical
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-12437 CVE-2026-12438 CVE-2026-12439 CVE-2026-12440 CVE-2026-12441 CVE-2026-12442 CVE-2026-12443 CVE-2026-12444 CVE-2026-12445 CVE-2026-12446 CVE-2026-12447 CVE-2026-12448 CVE-2026-12449 CVE-2
bugzilla·2026-06-19
CVE-2026-12437 [HIGH] CVE-2026-12437 CVE-2026-12438 CVE-2026-12439 CVE-2026-12440 CVE-2026-12441 CVE-2026-12442 CVE-2026-12443 CVE-2026-12444 CVE-2026-12445 CVE-2026-12446 CVE-2026-12447 CVE-2026-12448 CVE-2026-12449 CVE-2
CVE-2026-12437 CVE-2026-12438 CVE-2026-12439 CVE-2026-12440 CVE-2026-12441 CVE-2026-12442 CVE-2026-12443 CVE-2026-12444 CVE-2026-12445 CVE-2026-12446 CVE-2026-12447 CVE-2026-12448 CVE-2026-12449 CVE-2026-12450 ... chromium: various flaws [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
FEDORA-EPEL-2026-ad8f61e943 (chromium-149.0.7827.155-1.el10_2) has been submitted as an update to Fedora EPEL 10.2.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-ad8f61e943
---
FEDORA-EPEL-2026-0c2688537b (chromium-149.0.7827.155-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodh
Bugzilla
CVE-2026-12437 CVE-2026-12438 CVE-2026-12439 CVE-2026-12440 CVE-2026-12441 CVE-2026-12442 CVE-2026-12443 CVE-2026-12444 CVE-2026-12445 CVE-2026-12446 CVE-2026-12447 CVE-2026-12448 CVE-2026-12449 CVE-2
bugzilla·2026-06-19
CVE-2026-12437 [HIGH] CVE-2026-12437 CVE-2026-12438 CVE-2026-12439 CVE-2026-12440 CVE-2026-12441 CVE-2026-12442 CVE-2026-12443 CVE-2026-12444 CVE-2026-12445 CVE-2026-12446 CVE-2026-12447 CVE-2026-12448 CVE-2026-12449 CVE-2
CVE-2026-12437 CVE-2026-12438 CVE-2026-12439 CVE-2026-12440 CVE-2026-12441 CVE-2026-12442 CVE-2026-12443 CVE-2026-12444 CVE-2026-12445 CVE-2026-12446 CVE-2026-12447 CVE-2026-12448 CVE-2026-12449 CVE-2026-12450 ... chromium: various flaws [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
FEDORA-2026-f9a0af40b2 (chromium-149.0.7827.155-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-f9a0af40b2
Bugzilla
CVE-2026-12437 chromium-browser: chromium-browser: Use after free in WebShare
bugzilla·2026-06-17
CVE-2026-12437 [HIGH] CVE-2026-12437 chromium-browser: chromium-browser: Use after free in WebShare
CVE-2026-12437 chromium-browser: chromium-browser: Use after free in WebShare
Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
Hackernews
⚡ Weekly Recap: Browser Bugs, EDR Killers, TV Botnet, OpenBSD Flaw, Android Trojan, and More
blogs_hackernews·2026-06-22·CVSS 9.8
CVE-2026-24858 [CRITICAL] ⚡ Weekly Recap: Browser Bugs, EDR Killers, TV Botnet, OpenBSD Flaw, Android Trojan, and More
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## ⚡ Weekly Recap: Browser Bugs, EDR Killers, TV Botnet, OpenBSD Flaw, Android Trojan, and More
It’s Monday again.
This week’s threat list looks painfully familiar: abused integrations, fake tools, poisoned websites, ransomware crews trying to shut down security tools, and mobile malware asking for way too much control.
The annoying part is how little of this feels new. Weak credentials, sketchy downloads, browser extensions with too much access, and WordPress sites are used to push more attacks. Nothing clever. Just sloppy, cheap, and effective.
Here’s the Monday recap. Let’s get into the week’s mess.
## ⚡ Threat of the We
2026-06-17
Published