MongoDBGHSA-j29g-r9cq-fh35
Authenticated KMS request forgery via CRLF injection in GCP key identifier strings
Medium5.7CVE-2026-84962 · Published Sep 3, 2026
### Impact An unauthorized user with key vault write access may cause an authorized client to issue arbitrary authenticated Google Cloud KMS API calls under the authorized user's identity, escalating database-level access into cloud key control and defeating client-side encryption. ### Patches Fixed in 1.20.2. ### Workarounds Validate the contents of the key vault collection. ### References https://jira.mongodb.org/browse/MONGOCRYPT-960
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| libmongocrypt Product | < 1.20.2 | 1.20.2 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- Severity from
- GitHub (reviewed advisory)
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