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Vulnerability record · CVE-2019-12278 · published 12 March 2020

CVE-2019-12278: Opera vulnerability

Opera · Opera

Opera through 53 on Android allows Address Bar Spoofing. Characters from several languages are displayed in Right-to-Left order, due to mishandling of several Unicode characters. The rendering mechanism, in conjunction with the "first strong character" concept, may improperly operate on a numerical IP address or an alphabetic string, leading to a spoofed URL.

4.3 CVSS 3.1 Medium EPSS 0.82% · top 44.4%
4.3CVSS 3.1 base score, v2 4.3
0.82%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Opera through 53 on Android allows Address Bar Spoofing. Characters from several languages are displayed in Right-to-Left order, due to mishandling of several Unicode characters. The rendering mechanism, in conjunction with the "first strong character" concept, may improperly operate on a numerical IP address or an alphabetic string, leading to a spoofed URL.

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

Affected products

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

References

LinkTags
https://help.opera.com/en/latest/security-and-privacy/ Vendor Advisory
https://medium.com/bugbountywriteup/opera-android-address-bar-spoofing-cve-2019-12278-9ffcfd6c508c ExploitThird Party Advisory
https://help.opera.com/en/latest/security-and-privacy/ Vendor Advisory
https://medium.com/bugbountywriteup/opera-android-address-bar-spoofing-cve-2019-12278-9ffcfd6c508c ExploitThird Party Advisory

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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-2019-12278), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.