CVE-2026-57522 (GCVE-0-2026-57522)
Vulnerability from cvelistv5 – Published: 2026-06-25 19:09 – Updated: 2026-07-14 21:34 X_Open Source
VLAI
EPSS
VEX
Title
Bitwarden Server < 2026.5.0 JSON Injection via Webhook Templates
Summary
Bitwarden Server before 2026.5.0 contains a JSON injection vulnerability in IntegrationTemplateProcessor.ReplaceTokens(), which substitutes user-controlled values into event-integration templates without JSON encoding. When an organization has configured an event integration whose template references a user-controlled token (such as #ActingUserName# or #UserName#, populated from a member's display name), an authenticated member can set their display name to JSON metacharacters and inject arbitrary key-value pairs into the rendered payloads delivered to webhook, SIEM, Slack, Teams, or Datadog endpoints, making injected fields indistinguishable from legitimate template output.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 14:04 UTC
CWE
- CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://sanjokkarki.com.np/blog/bitwarden-webhook… | technical-descriptionexploit |
| https://github.com/bitwarden/server/releases/tag/… | release-notes |
| https://github.com/bitwarden/server/pull/7593 | issue-tracking |
| https://github.com/bitwarden/server/commit/a26afd… | patch |
| https://www.vulncheck.com/advisories/bitwarden-se… | third-party-advisory |
Impacted products
Date Public
2026-05-12 00:00
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