CVE-2026-3917Disclosure(apple / chrome)

LOWCVSS 8.8 · HIGH

Signal is active with 2 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 Agents in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

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1.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_10.html

Other references

https://issues.chromium.org/issues/483569512

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 3 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 3 signals
Technical details provided in 5 signals
Disclosure: 3 classified signals
Peaked 1d ago at 2 mentions (2026-03-12); latest day: 2
5 total mentions across 3 days

Affected systems

Vendors

apple google linux microsoft

Products

chromelinux_kernelmacoswindows

1 version affected across 4 products

Deep dive

Activity timeline5 mentions / 3d

Signal classification2 categories

Disclosure

360.0%

Patch

240.0%

Referenced assets5 URLs

By indicator

Classification over time

Date	Total	Labels

2026-03-11	1	Disclosure1
2026-03-12	2	Disclosure2
2026-03-19	2	Patch2

Full discourse5 posts

iototsecnews@iototsecnews206d
Patch
Google が Chrome 146 を正式リリース：リモート・コード実行などの 29 件の脆弱性を修正 https://iototsecnews.jp/2026/03/12/chrome-security-update-patch-for-29-vulnerabilities-that-allow-remote-code-execution/ 今回の Chrome のアップデートでは、プログラムが確保したメモリ領域に対する扱いの不備が主な原因となっています。特に CVE-2026-3913 では、割り当てられたサイズを超えてデータを書き込んでしまうヒープバッファ・オーバーフローが発生します。また、CVE-2026-3917／CVE-2026-3919 などで指摘された解放済みメモリ使用 (UAF) は、すでに不要として解放されたメモリ領域への不正なアクセスにより発生します。これらのメモリ管理の問題は、悪意の Web ページを閲覧するだけで、リモート・コード実行に至るなどの深刻な影響を招く可能性があるため、注意が必要です。 #Chrome #CVE20263916 #CVE20263917 #CVE20263918 #CVE20263919 #CVE20263921 #CVE20263922 #CVE20263923 #CVE20263924 #Google
Post summary
Google’s Chrome 146 release patches 29 CVEs, including heap buffer overflows and use‑after‑free bugs; the update mitigates remote code execution risks that can be triggered by visiting malicious web pages.
01000285
484 followersView on X
yousukezan@yousukezan213d
Disclosure
GoogleがChrome 146を安定版として公開し、29件の脆弱性を修正した。特にWebMLのヒープバッファオーバーフローCVE-2026-3913は重大度Criticalで、研究者に3万3000ドルの報奨金が支払われた。 Chrome 146（146.0.7680.71/72）はWindows、Mac、Linux向けに段階配信される。今回の更新では合計29件のセキュリティ欠陥が修正され、複数が高リスクと分類された。最も深刻なCVE-2026-3913はWebMLコンポーネントのヒープバッファオーバーフローで、メモリ安全性に重大な影響を与える可能性がある。報告者は研究者Tobias Wienandで、3万3000ドルの報奨金が支払われた。さらにWebML関連では整数オーバーフローとヒープバッファオーバーフローのCVE-2026-3914、CVE-2026-3915が修正され、合計8万6000ドルの報奨金が授与された。加えてWeb Speechの境界外読み取りCVE-2026-3916や、Extensions、MediaStream、WebMIDI、WindowDialogなどに影響するUse After Free脆弱性（CVE-2026-3917～CVE-2026-3924）も修正された。LookalikeChecksやPicture-in-Picture、WebAppインストールのUI問題、PDFビューアやClipboardのポリシー処理不備など中・低危険度の問題も含まれる。詳細は多くが修正普及まで非公開とされている。 https://securityonline.info/chrome-146-arrives-with-29-security-fixes-critical-webml-flaw-discovered/
Post summary
Google released Chrome 146 with 29 security fixes, including a critical WebML heap buffer overflow (CVE‑2026‑3913) that earned a $33,000 bounty, along with other integer and use‑after‑free vulnerabilities.
000101.0K
11.8K followersView on X
WindowsForum@windowsforum206d
Patch
🔥 Microsoft: “No worries, it’s fixed upstream.” Meanwhile Edge users get a UAF welcome mat. Memory safety drama still travels by codebase—great, another wait for the next build. #CVE #Windows https://windowsforum.com/threads/cve-2026-3917-use-after-free-how-microsoft-edge-inherits-chromium-fixes.405610/ #WindowsPatchManagement #MicrosoftEdgeSecurity #Cve20263917
Post summary
Microsoft has acknowledged fixing CVE‑2026‑3917 upstream; the post notes that Edge users still experience a use‑after‑free issue, but vendor updates are expected to resolve it.
0000016
1.0K followersView on X
The Hacker Wire@TheHackerWire212d
Disclosure
🟠 CVE-2026-3917 - High Use after free in Agents in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High) https://www.thehackerwire.com/vulnerability/CVE-2026-3917/ https://t.co/pa2QzEaBel
Post summary
A high‑severity use‑after‑free vulnerability in Chrome (pre‑146.0.7680.71) may allow remote heap corruption via a crafted HTML page.
0000034
134 followersView on X
CVE@CVEnew213d
Disclosure
CVE-2026-3917 Use after free in Agents in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium sec… https://www.cve.org/CVERecord?id=CVE-2026-3917
Post summary
This brief excerpt announces the discovery of CVE‑2026‑3917, a use‑after‑free vulnerability in Chrome prior to version 146.0.7680.71 that could allow remote heap corruption via a crafted HTML page.
00000112
56.7K 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-2026-3917

yousukezan[verified]@yousukezanDisclosure

Google released Chrome 146 with 29 security fixes, including a critical WebML heap buffer overflow (CVE‑2026‑3913) that earned a $33,000 bounty, along with other integer and use‑after‑free vulnerabilities.

WindowsForum[verified]@windowsforumPatch

Microsoft has acknowledged fixing CVE‑2026‑3917 upstream; the post notes that Edge users still experience a use‑after‑free issue, but vendor updates are expected to resolve it.

iototsecnews@iototsecnewsPatch

Google’s Chrome 146 release patches 29 CVEs, including heap buffer overflows and use‑after‑free bugs; the update mitigates remote code execution risks that can be triggered by visiting malicious web pages.

The Hacker Wire@TheHackerWireDisclosure

A high‑severity use‑after‑free vulnerability in Chrome (pre‑146.0.7680.71) may allow remote heap corruption via a crafted HTML page.

CVE@CVEnewDisclosure

This brief excerpt announces the discovery of CVE‑2026‑3917, a use‑after‑free vulnerability in Chrome prior to version 146.0.7680.71 that could allow remote heap corruption via a crafted HTML page.