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CVE-2026-34486: Apache Tomcat EncryptInterceptor Fail-Open Bypass
Technical analysis shows CVE-2026-34486 is a one-line fail-open regression in Tomcat Tribes enabling unauthenticated RCE via Java deserialization.
CVE-2026-34486 is a fail-open regression in Tomcat's Tribes EncryptInterceptor, introduced while fixing the CVE-2026-29146 padding-oracle flaw; Apache rated it Important and NVD scores it 7.5 High. Decryption failures are now forwarded to an unfiltered ObjectInputStream, and public PoC repositories demonstrate unauthenticated RCE on default port 4000 when clustering, the EncryptInterceptor, a reachable receiver and deserialization gadgets are all present. Affected releases 9.0.116, 10.1.53 and 11.0.20 are fixed in 9.0.117, 10.1.54 and 11.0.21; Tomcat 8.5 is unaffected.
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Network Attack Trends: Internet of Threats (November 2020
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U.S. CISA adds Gitea flaw to its Known Exploited Vulnerabilities catalog
CISA added the actively exploited Gitea RCE flaw CVE-2026-60004 (CVSS 9.8) to its KEV catalog, with federal patching due by August 28, 2026.
CISA added CVE-2026-60004, a critical remote code execution flaw in Gitea (CVSS 9.8), to its Known Exploited Vulnerabilities catalog. The flaw affects Gitea versions since 1.17, fixed in 1.27.1, and lets attackers with repository write access execute shell commands via the diffpatch API and Git hooks. Open registration allows unauthenticated attackers to create accounts and exploit exposed instances, with a reported attack deploying a cryptocurrency-miner-like payload.
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Microsoft Fixes 63 Security Flaws, Including a Windows Kernel Zero
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Two New Windows Zero-Days Exploited in the Wild — One Affects Every Version Ever Shipped
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Week in review: Exploited Ivanti Connect Secure zero-day, Patch Tuesday forecast
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Network Attack Trends: February
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CISA adds Ruckus bug and another six flaws to its Known Exploited Vulnerabilities catalog
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