How severe is CVE-2005-3059?

CVE-2005-3059 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2005-3059 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-3059?

CVE-2005-3059 affects Opera Opera Browser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-3059?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2005-3059 published?

CVE-2005-3059 was published on 2005-09-26 and last updated on 2026-06-16.

CVE-2005-3059

CVE-2005-3059 is a critical-severity vulnerability in Opera Opera Browser with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Opera Opera Browser
Published: 2005-09-26
Last modified: 2026-06-16

Description

Multiple unspecified vulnerabilities in Opera 8.50 on Linux and Windows have unknown impact and attack vectors, related to (1) " handling of must-revalidate cache directive for HTTPS pages" or (2) a "display issue with cookie comment encoding."

Frequently asked questions

What is CVE-2005-3059?: Multiple unspecified vulnerabilities in Opera 8.50 on Linux and Windows have unknown impact and attack vectors, related to (1) " handling of must-revalidate cache directive for HTTPS pages" or (2) a "display issue with cookie comment encoding."
How severe is CVE-2005-3059?: CVE-2005-3059 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2005-3059 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-3059?: CVE-2005-3059 affects Opera Opera Browser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-3059?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2005-3059 published?: CVE-2005-3059 was published on 2005-09-26 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:opera:opera_browser:8.50:*:*:*:*:*:*:*

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