CVE-2009-2059

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-06-15 · updated 2026-06-16
Weakness: CWE-287

Description

Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an "SSL tampering" attack.

Affected products

Opera Browser: through 9.22; 7.0, 7.23, 7.53, 7.54, 7.60, 8.0 (+14)

References

http://research.microsoft.com/apps/pubs/default.aspx?id=79323
http://research.microsoft.com/pubs/79323/pbp-final-with-update.pdf
http://research.microsoft.com/apps/pubs/default.aspx?id=79323
http://research.microsoft.com/pubs/79323/pbp-final-with-update.pdf

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