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Medium severity4.3NVD Advisory· Published May 29, 2023· Updated Jun 17, 2026

CVE-2023-2808

CVE-2023-2808

Description

Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink, allowing an attacker to trigger link preview on a disallowed domain using a specially crafted link.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Mattermost/Mattermost3 versions
    cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*range: >=5.34.0,<7.1.9
    • (no CPE)
    • (no CPE)range: 0

Patches

Vulnerability mechanics

References

1

News mentions

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