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CVE-2001-0898: Opera 6.0 and earlier allows remote attackers to access sensitive information such as cookies and links for ot

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This month
MEDIUM 5.0UPGRADE

CVE-2001-0898 is a medium-severity flaw (CVSS 5.0) affecting opera web browser. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Opera 6.0 and earlier allows remote attackers to access sensitive information such as cookies and links for other domains via Javascript that uses setTimeout to (1) access data after a new window to the domain has been opened or (2) access data via about:cache.

Why this priority

  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score5.0 (Medium)
EPSS exploit chance3.1% (top 12%)
CISA exploited listNo
Published2001-11-15
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: opera software

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Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

opera software opera web browser UPGRADE
Affected: <= 6.0
Fixed in: newer than 6.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy opera-web-browser || rpm -q opera-web-browser || opera-web-browser --version
2. UPGRADE to newer than 6.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade opera-web-browser
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade opera-web-browser
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2001-0898?

opera web browser: upgrade to newer than 6.0. Exact commands for each OS are on this page.

Is CVE-2001-0898 being exploited?

CVE-2001-0898 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2001-0898 affect?

CVE-2001-0898 affects opera web browser. Severity is medium (CVSS 5.0). Opera 6.0 and earlier allows remote attackers to access sensitive information such as cookies and links for other domains via Javascript that uses setTimeout to (1) access data after a new window to the domain has been opened or (2) access

How urgent is CVE-2001-0898?

Priority 44/100. Public exploit reference

Related CVEs

References

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