CVE-2026-7940Disclosure(apple / chrome)

LOWCVSS 8.8 · HIGH

Signal is active with 3 mentions in latest observed window

Immediate actions

Patch apple chrome systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Use after free in V8 in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: Medium)

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1.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html

Other references

https://issues.chromium.org/issues/493631402

Weakness type (CWE)

CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

chrome
linux_kernel
macos
windows

Threat summary

Patch or workaround signal is available
5 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 5 signals
Disclosure: 4 classified signals
Peaked at 3 mentions on most recent observed day (2026-06-16)
5 total mentions across 2 days

Affected systems

Vendors

apple google linux microsoft

Products

chromelinux_kernelmacoswindows

1 version affected across 4 products

Deep dive

Activity timeline5 mentions / 2d

Signal classification2 categories

Disclosure

480.0%

Patch

120.0%

Referenced assets2 URLs

By indicator

Classification over time

Date	Total	Labels

2026-05-06	2	Disclosure2
2026-06-16	3	Disclosure2Patch1

Full discourse5 posts

Lyrie.ai@lyrie_ai114d
Disclosure
The CVE-2026-7940 disclosure closes the final gap in the attack chain. Previously, a malicious extension was limited to data exfiltration within the browser process. With CVE-2026-7940 (and the class of extension-gated V8 bugs it represents), a weaponized extension becomes…
Post summary
The post announces the disclosure of CVE‑2026‑7940, highlighting its role in closing a gap in the attack chain and describing its relationship to extension‑gated V8 bugs, but does not provide a PoC, exploit, or patch details.
1000038
288 followersView on X
Lyrie.ai@lyrie_ai114d
Patch
CVE CVE-2026-7940 | Chrome V8 memory handling flaw | Affects Chrome < 148.0.7778.96 | CVSS: medium | Exploitation requires installed malicious extension | Patched May 6, 2026
Post summary
CVE-2026-7940 is a Chrome V8 memory handling flaw patched on May 6, 2026; the post provides technical details and a patch date but no PoC, exploit code, or evidence of active exploitation.
1000039
288 followersView on X
Lyrie.ai@lyrie_ai114d
Disclosure
Google and Microsoft jointly disclosed CVE-2026-7940 on May 6, 2026. The flaw resides in the V8 JavaScript engine (Chrome for Windows/macOS/Linux, pre-148.0.7778.96). An attacker can craft a malicious extension that triggers a bug in V8's optimization or garbage collection…
Post summary
Google and Microsoft disclosed CVE-2026-7940, a vulnerability in the V8 JavaScript engine affecting Chrome versions before 148.0.7778.96, which can be triggered via a malicious extension to exploit bugs in optimization or garbage collection.
1000050
288 followersView on X
Infoflowcloud@infoflowcloud155d
Disclosure
🚨*CVE* CVE-2026-7940 Use after free in V8 in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside … https://www.cve.org/CVERecord?id=CVE-2026-7940 ----- Traducción: CVE-2026-7940 Use… http://infoflow.cloud`
Post summary
Announces CVE-2026-7940, a use-after-free flaw in V8 affecting Chrome versions before 148.0.7778.96, potentially exploitable via a malicious extension, but provides no PoC, exploit, or patch details.
0000041
75 followersView on X
CVE@CVEnew155d
Disclosure
CVE-2026-7940 Use after free in V8 in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside … https://www.cve.org/CVERecord?id=CVE-2026-7940
Post summary
The passage discloses CVE‑2026‑7940 as a use‑after‑free flaw in Google Chrome's V8 engine before version 148.0.7778.96, noting the potential for arbitrary code execution via malicious extensions but provides no PoC, patch, or evidence of active exploitation.
00000233
57.4K followersView on X

CPE platform detail4 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

4 of 4 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	apple	macos	-	-	-
App	google	chrome	-	-	-
OS	linux	linux_kernel	-	-	-
OS	microsoft	windows	-	-	-

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What researchers are saying

CVE-2026-7940

Lyrie.ai[verified]@lyrie_aiDisclosure

The post announces the disclosure of CVE‑2026‑7940, highlighting its role in closing a gap in the attack chain and describing its relationship to extension‑gated V8 bugs, but does not provide a PoC, exploit, or patch details.

Lyrie.ai[verified]@lyrie_aiPatch

CVE-2026-7940 is a Chrome V8 memory handling flaw patched on May 6, 2026; the post provides technical details and a patch date but no PoC, exploit code, or evidence of active exploitation.

Lyrie.ai[verified]@lyrie_aiDisclosure

Google and Microsoft disclosed CVE-2026-7940, a vulnerability in the V8 JavaScript engine affecting Chrome versions before 148.0.7778.96, which can be triggered via a malicious extension to exploit bugs in optimization or garbage collection.

Infoflowcloud@infoflowcloudDisclosure

Announces CVE-2026-7940, a use-after-free flaw in V8 affecting Chrome versions before 148.0.7778.96, potentially exploitable via a malicious extension, but provides no PoC, exploit, or patch details.

CVE@CVEnewDisclosure

The passage discloses CVE‑2026‑7940 as a use‑after‑free flaw in Google Chrome's V8 engine before version 148.0.7778.96, noting the potential for arbitrary code execution via malicious extensions but provides no PoC, patch, or evidence of active exploitation.