CVE-2023-42452

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Summary

CVECVE-2023-42452
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-09-19 16:15:00 UTC
Updated2023-09-22 17:12:00 UTC
DescriptionMastodon is a free, open-source social network server based on ActivityPub. In versions on the 4.x branch prior to versions 4.0.10, 4.2.8, and 4.2.0-rc2, under certain conditions, attackers can abuse the translation feature to bypass the server-side HTML sanitization, allowing unescaped HTML to execute in the browser. The impact is limited thanks to Mastodon's strict Content Security Policy, blocking inline scripts, etc. However a CSP bypass or loophole could be exploited to execute malicious XSS. Furthermore, it requires user interaction, as this can only occur upon clicking the “Translate” button on a malicious post. Versions 4.0.10, 4.2.8, and 4.2.0-rc2 contain a patch for this issue.

Risk And Classification

Problem Types: CWE-79

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Joinmastodon Mastodon All All All All
Application Joinmastodon Mastodon 4.2.0 beta1 All All
Application Joinmastodon Mastodon 4.2.0 beta2 All All
Application Joinmastodon Mastodon 4.2.0 beta3 All All
Application Joinmastodon Mastodon 4.2.0 rc1 All All

References

ReferenceSourceLinkTags
Merge pull request from GHSA-2693-xr3m-jhqr · mastodon/mastodon@ff32475 · GitHub MISC github.com
Stored XSS through the translation feature · Advisory · mastodon/mastodon · GitHub MISC github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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