← Vulnerability feed

Vulnerability record · CVE-2020-6159 · published 23 December 2020

CVE-2020-6159: Opera cross-site scripting vulnerability

Opera · Opera

URLs using “javascript:” have the protocol removed when pasted into the address bar to protect users from cross-site scripting (XSS) attacks, but in certain circumstances this removal was not performed. This could allow users to be socially engineered to run an XSS attack against themselves. This vulnerability affects Opera for Android versions below 61.0.3076.56532.

6.1 CVSS 3.1 Medium EPSS 0.64% · top 51.3% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

URLs using “javascript:” have the protocol removed when pasted into the address bar to protect users from cross-site scripting (XSS) attacks, but in certain circumstances this removal was not performed. This could allow users to be socially engineered to run an XSS attack against themselves. This vulnerability affects Opera for Android versions below 61.0.3076.56532.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://security.opera.com/cross-site-scripting-in-ofa-opera-security-advisories/ Vendor Advisory
https://security.opera.com/cross-site-scripting-in-ofa-opera-security-advisories/ Vendor Advisory

Track CVE-2020-6159 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2008-4293Opera vulnerabilityUnspecified vulnerability in Opera before 9.52 on Windows, when registered as a protocol handler, allows remote attackers to cause a denial of servic…EPSS 4.5%10.0CVE-2008-3079Opera vulnerabilityUnspecified vulnerability in Opera before 9.51 on Windows allows attackers to execute arbitrary code via unknown vectors.EPSS 3.0%9.3CVE-2008-5679Opera vulnerabilityThe HTML parsing engine in Opera before 9.63 allows remote attackers to execute arbitrary code via crafted web pages that trigger an invalid pointer …EPSS 3.3%9.3CVE-2008-5178Opera memory buffer overflow vulnerabilityHeap-based buffer overflow in Opera 9.62 on Windows allows remote attackers to execute arbitrary code via a long file:// URI. NOTE: this might overla…EPSS 32%9.3CVE-2008-4794Opera improper input validation vulnerabilityOpera before 9.62 allows remote attackers to execute arbitrary commands via the History Search results page, a different vulnerability than CVE-2008-…EPSS 4.5%9.3CVE-2008-4695Opera information exposure vulnerabilityOpera before 9.60 allows remote attackers to obtain sensitive information and have unspecified other impact by predicting the cache pathname of a cac…EPSS 6.0%9.3CVE-2008-1761Opera vulnerabilityOpera before 9.27 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted newsfeed source, whi…EPSS 7.6%9.3CVE-2008-1764Opera vulnerabilityUnspecified vulnerability in Opera before 9.27 has unknown impact and attack vectors related to "keyboard handling of password inputs."EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2020-6159), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.