CVE-2023-51219

9.6 criticalEPSS 0.5%

Critical (9.6). EPSS 0.5% chance of exploitation in the next 30 days.

A deep link validation issue in KakaoTalk 10.4.3 allowed a remote adversary to direct users to run any attacker-controlled JavaScript within a WebView. The impact was further escalated by triggering another WebView that leaked its access token in a HTTP request header. Ultimately, this access token could be used to take over another user's account and read her/his chat messages.

Severity

CVSS 3.1

9.6 critical

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2024-06-03
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://news.ycombinator.com/item?id=40776880
https://stulle123.github.io/posts/kakaotalk-account-takeover/
https://news.ycombinator.com/item?id=40776880
https://stulle123.github.io/posts/kakaotalk-account-takeover/

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