CVE-2006-2786

Severity: low (CVSS 2.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-06-02 · updated 2026-06-16

Description

HTTP response smuggling vulnerability in Mozilla Firefox and Thunderbird before 1.5.0.4, when used with certain proxy servers, allows remote attackers to cause Firefox to interpret certain responses as if they were responses from two different sites via (1) invalid HTTP response headers with spaces between the header name and the colon, which might not be ignored in some cases, or (2) HTTP 1.1 headers through an HTTP 1.0 proxy, which are ignored by the proxy but processed by the client.

Affected products

Mozilla Firefox: through 1.5.0.3
Mozilla Thunderbird: through 1.5.0.3

References

http://rhn.redhat.com/errata/RHSA-2006-0609.html
http://secunia.com/advisories/20376
http://secunia.com/advisories/20382
http://secunia.com/advisories/20561
http://secunia.com/advisories/20709
http://secunia.com/advisories/21134
http://secunia.com/advisories/21176
http://secunia.com/advisories/21178
http://secunia.com/advisories/21183
http://secunia.com/advisories/21188
http://secunia.com/advisories/21269
http://secunia.com/advisories/21270

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