CVE-2026-9735: MongoDB Server · Sensitive Data in Logs
Affects MongoDB ServerSource CVE Database V5
Not known to be exploited · CVSS 6.8 Medium : upgrade to 8.3.3 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.3.3
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade MongoDB Server to 8.3.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| MongoDBMongoDB Server | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, it is recommended to disable connection health metric logging or restrict access to server logs to trusted administrators only to reduce the risk of credential exposure.
Description
MongoDB server may log authentication parameters, including credentials, to the server log during SASL authentication. When connection health metric logging is enabled, the full authentication parameters are written to the log without redaction.