Opera Web Browser vulnerabilitiesRanked by how likely they are to be used.

Product11 versions
The short answer

Opera Web Browser is made by Opera Software. We track 13 published vulnerabilities in it, across 11 versions. None of them is on the list of flaws known to be exploited today. If you run Opera Web Browser, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which Opera Web Browser vulnerabilities are being exploited?

This is the list that matters most: flaws criminals are using now.

None of Opera Web Browser's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

Exploit likelihood

Which Opera Web Browser flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 9.5%

    Microsoft Internet Explorer 6.0 and possibly others allows remote attackers to upload arbitrary file contents when users press a key corresponding to the JavaScript (1) event.ctrlKey or (2) event.shiftKey onkeydown...

    CVSS6.4Published31 Dec 2002
  2. 7.0%

    Opera 5.11 allows remote attackers to cause a denial of service (CPU consumption and memory leak) via a web page with a large number of images.

    CVSS5.0Published31 Dec 2001
  3. 6.0%

    Opera 6.0.1 and 6.0.2 allows a remote web site to upload arbitrary files from the client system, without prompting the client, via an input type=file tag whose value contains a newline.

    CVSS5.0Published4 Oct 2002
  4. 4.7%

    Opera, when configured with the "Determine action by MIME type" option disabled, interprets an object as an HTML document even when its MIME Content-Type is text/plain, which could allow remote attackers to execute...

    CVSS4.3Published29 May 2002
  5. 4.3%

    Netscape 6.2.3 and earlier, and Mozilla 1.0.1, allow remote attackers to corrupt heap memory and execute arbitrary code via a GIF image with a zero width.

    CVSS7.5Published4 Oct 2002
  6. 3.1%

    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...

    CVSS5.0Published15 Nov 2001
  7. 2.8%

    Opera 6.01, 6.0, and 5.12 allows remote attackers to execute arbitrary JavaScript in the security context of other sites by setting the location of a frame or iframe to a Javascript: URL.

    CVSS7.5Published12 Aug 2002
  8. 2.4%

    Opera 5.0 for Linux does not properly handle malformed HTTP headers, which allows remote attackers to cause a denial of service, possibly with a header whose value is the same as a MIME header name.

    CVSS5.0Published9 Jul 2001
  9. 1.8%

    Buffer overflow in Opera 6.01 allows remote attackers to cause a denial of service (crash) via an IMG tag with large width and height attributes.

    CVSS5.0Published31 Dec 2002
Precursor Intelligence

Running Opera Web Browser? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

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FAQ

Common questions, answered plainly.

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We track 13 published vulnerabilities listed under the name Opera Web Browser, across 11 versions.

None of Opera Web Browser's vulnerabilities is on the list of flaws known to be exploited today.

Create a Precursor Intelligence account and track Opera Web Browser. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.