VendorChrome Releases
Stable Channel Update for ChromeOS / ChromeOS FlexType Vulnerability
Google · Memory corruption
Use after free in Paint in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page
At a glance
Low
30-day window, from the last update
None observed
Evidence-weighted, not popularity
Why Low
Low rather than Medium: UK relevance is 40 of 100, little UK-specific signal so far.
Briefing
- Do not treat uncorroborated claims as confirmed breaches.
Questions to ask IT
- Do we run Google Chrome and Microsoft Edge, and which versions?
- If it is not yet patched, what mitigation is in place, and will the fix be done by 30 Nov?
Next steps
- Confirm whether this affects systems or suppliers in your estate
Vulnerability facts
Full CVE detail CVE-2026-118307- 8.8 · HighExploitable over the network without any account, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Not listed
- ~0.3% estimated chance of attack in 30 days
- Before 156.0.8078.73
- 156.0.8078.73
These facts are for CVE-2026-118307. This event covers 8 more CVEs, each with its own record. Versions are as the CVE record states them; check the vendor advisory before planning a fix.
No technical write-up beyond these facts and the summary below yet.
Next steps
- Review the advisory against your asset inventory and patch cadence
Summary
- Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
Products and services involved
- Google Chrome93% match confidence · CVE-2026-118307
- Microsoft Edge98% match confidence · CVE-2026-118307
Same event, different frames
Distinct often headline the same incident differently.
VendorMicrosoft Security Update Guide RSS
Chromium: CVE-2026-118307 Use after free in PaintPulse
Last change 31 Oct · Recheck overdue since 1 Nov 2026, 18:24 UK time
- Story28 Oct 2026, 22:02 UK time · 28 Oct
Linked reporting from Chrome Releases (vendor psirt).
Read source (Chrome Releases) - Update31 Oct 2026, 18:24 UK time · 31 Oct
moved from Medium to Low. Suggested changed to 30d.
- Story31 Oct 2026, 18:24 UK time · 31 Oct
Linked reporting from Microsoft Security Update Guide RSS (vendor psirt).
Read source (Microsoft Security Update Guide RSS)
3 entries so far. The timeline chart appears once this story has more history.
Sources
- Chrome ReleasesVendor
Stable Channel Update for ChromeOS / ChromeOS Flex
Chromium: CVE-2026-118307 Use after free in Paint
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ClaimedHeadline60% confidence
Use after free in Paint in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page
- ProbableSummary fact75% confidence
Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](https://chromereleases.googleblog.com/2026) for more information.
- ConfirmedCVE identifier95% confidence
Event involves CVE-2026-118307