What’s Vulnerable › Vulnerabilities

CVE-2010-1766

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2010-07-22 · updated 2026-06-16
• Weakness: CWE-189

Description

Off-by-one error in the WebSocketHandshake::readServerHandshake function in websockets/WebSocketHandshake.cpp in WebCore in WebKit before r56380, as used in Qt and other products, allows remote websockets servers to cause a denial of service (memory corruption) or possibly have unspecified other impact via an upgrade header that is long and invalid.

Affected products

• Digia Qt: through 4.6.2
• WebKit: through r56379

References

• http://lists.fedoraproject.org/pipermail/package-announce/2010-July/044023.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-July/044031.html
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
• http://secunia.com/advisories/40557
• http://secunia.com/advisories/41856
• http://secunia.com/advisories/43068
• http://trac.webkit.org/changeset/56380
• http://www.mandriva.com/security/advisories?name=MDVSA-2011:039
• http://www.ubuntu.com/usn/USN-1006-1
• http://www.vupen.com/english/advisories/2010/1801
• http://www.vupen.com/english/advisories/2010/2722
• http://www.vupen.com/english/advisories/2011/0212

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