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Chrome V8 Zero-Day Exploited in the Wild Enables Code Execution Inside Sandbox
Google patches actively exploited Chrome V8 zero-day CVE-2026-87491, an out-of-bounds write enabling sandboxed code execution via crafted HTML pages.
Google released Chrome 153.0.8010.36/.37 fixing 230 vulnerabilities, including CVE-2026-87491, an out-of-bounds write in the V8 engine that allowed remote code execution inside the sandbox via a crafted HTML page and is confirmed to be exploited in the wild. The flaw was reported on August 6, 2026 by Jihyeon Jeong of Compsec Lab, Seoul National University, who received a $2,500 bug bounty. This is the seventh actively exploited Chrome zero-day of 2026. The update also fixes five critical flaws in WebGL and Cast, plus a high WebPackaging use-after-free (CVE-2026-87639) credited to OpenAI Codex Security.
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U.S. CISA adds Microsoft and Adobe flaws to its Known Exploited Vulnerabilities catalog
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Google fixes fourth actively exploited Chrome zero
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Google fixes seventh actively exploited Chrome zero
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Google fixes a new Chrome zero
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Google fixes the third actively exploited Chrome 0
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Chrome 153 Patches Seventh Zero-Day of 2026
Google patches Chrome V8 zero-day CVE-2026-87491, exploited in the wild, marking the seventh exploited Chrome zero-day of 2026, in an update fixing 230 flaws.
Google released Chrome 153 with fixes for 230 vulnerabilities, including CVE-2026-87491, a medium-severity out-of-bounds write in the V8 JavaScript and WebAssembly engine that Google says is being exploited in the wild. It is the seventh zero-day patched in Chrome in 2026, following CVE-2026-2441, CVE-2026-3909, CVE-2026-3910, CVE-2026-5281, CVE-2026-11645 and CVE-2026-85046. The update also fixes five critical bugs (four in WebGL, one in Cast), 41 high-severity defects, and more than 180 medium/low issues, rolling out as 153.0.8010.36/.37 for Windows/macOS and 153.0.8010.36 for Linux.
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Google Chrome Zero-day Vulnerability Exploited in the Wild (CVE-2026-85046)
Google patched 12 Chrome flaws including in-the-wild V8 zero-day CVE-2026-85046; CISA added it to the KEV catalog.
Google released Chrome 152.0.7977.82/.83 for Windows and Mac (152.0.7977.82 for Linux) fixing 12 vulnerabilities, including CVE-2026-85046, a type confusion flaw in the V8 JavaScript engine being exploited in the wild. CISA added CVE-2026-85046 to its Known Exploited Vulnerabilities Catalog with a patch deadline of September 18, 2026. This is Chrome's sixth zero-day patched in 2026, following CVE-2026-2441, CVE-2026-3909, CVE-2026-3910, CVE-2026-5281 and CVE-2026-11645. The other 11 fixes include use-after-free, out-of-bounds, race condition and input validation flaws in Skia, WebGL, DevTools, Network, Compositing and other components.
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Two CVSS 9.8 Auth Bypasses in miniOrange SAML WordPress Plugin Were Exploited Before Any Database Even Listed the Paid Editions as Vulnerable
Attackers actively exploit two CVSS 9.8 auth bypasses (CVE-2026-61979, CVE-2026-15981) in the miniOrange SAML WordPress plugin, forging SAML responses to become admin.
CVE-2026-61979 is a SAML algorithm confusion flaw that lets attackers sign forged assertions using the identity provider's RSA public key as an HMAC secret; CVE-2026-15981 stems from PHP treating openssl_verify()'s -1 error return as true, allowing a crafted signature that triggers an OpenSSL error to validate. Both bugs independently let unauthenticated attackers obtain WordPress administrator sessions and both are confirmed exploited in the wild. DigitalOcean discovered the exploitation via a network anomaly after public vulnerability databases covered only the Free edition (fixed in 5.4.5), leaving seven independently versioned paid editions appearing patched. Attackers are scanning SSO endpoints from six IPs in Belgium, Nigeria, the US and Germany, and paid-edition fixes require manual uploads across version lines.
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New Chrome Zero-Day CVE-2026-5281 Under Active Exploitation — Patch Released
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Google fixes Chrome zero-day with in-the-wild exploit (CVE-2026-5281)
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U.S. CISA adds Apple, Rockwell, and Hikvision flaws to its Known Exploited Vulnerabilities catalog
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