MEDIUMCVSS 5.4Vulnerability
CVE-2026-81528
A MongoDB C# driver document-replacement code path omits the element-name/shape validation that the equivalent write paths apply, so a value supplied as a replacement is forwarded to the server without neutralization of query-language special elements. An application that passes untrusted, loosely-typed input as a replacement value therefore allows that input to be interpreted by the database as update logic rather than as data, executing under the application's own database credentials. Applications using strongly-typed document mappings are not affected.
Properties
- severity
- MEDIUM
- epss_score
- 0.00273
- cvss_severity
- MEDIUM
- cvss_score
- 5.4
- retrieved_at
- 2026-09-29T22:27:20+00:00
- last_source
- FIRST EPSS
- score
- 5.4
- cve_id
- CVE-2026-81528
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- signal_observed_at
- 2026-09-29T22:17:56+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- published_at
- 2026-08-27T20:18:51.340
- last_modified
- 2026-09-29T19:16:27.513
- epss_percentile
- 0.17735
Related Entities (4)
ENRICHED_BY (1)
→[Source]FIRST EPSS
AFFECTS_PRODUCT (1)
→[Product]
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Improper Neutralization of Special Elements in Data Query Logic
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