Yandex Browser for Android 20.8.4 allows remote attackers to perform SOP bypass and addresss bar spoofing

published 2021-09-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-20461

cvss: 7.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits: 0; none known

Patch / fix

fixed in 1

yandex yandex_browser 20.8.4

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a Yandex Browser for Android

Classification

Weakness

CWE-346 Origin Validation Error

References

yandex.com /bugbounty/i/hall-of-fame-browser/
vendor-advisory

Sources

CVE List CVE-2020-27969
NVD CVE-2020-27969

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary