CVE-2010-1585

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-04-28 · updated 2026-06-16
Weakness: CWE-20

Description

The nsIScriptableUnescapeHTML.parseFragment method in the ParanoidFragmentSink protection mechanism in Mozilla Firefox before 3.5.17 and 3.6.x before 3.6.14, Thunderbird before 3.1.8, and SeaMonkey before 2.0.12 does not properly sanitize HTML in a chrome document, which makes it easier for remote attackers to execute arbitrary JavaScript with chrome privileges via a javascript: URI in input to an extension, as demonstrated by a javascript:alert sequence in (1) the HREF attribute of an A element or (2) the ACTION attribute of a FORM element.

Affected products

Mozilla Firefox: through 3.5.16; 3.6, 3.6.2, 3.6.3, 3.6.4, 3.6.6, 3.6.7 (+94)
Mozilla Seamonkey: through 2.0.11; 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.2, 1.0.3 (+49)
Mozilla Thunderbird: through 3.1.7; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+74)

References

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