CVE-2026-41696: Spring Data MongoDB Bind Parameter Literal Quoting Breakout

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-09 · updated 2026-07-23
Weakness: CWE-943

Description

Spring Data MongoDB repository query methods annotated with @Query that use regex parameter binding perform insufficient validation of the bound parameter. An attacker can supply a crafted string to break out of the intended regular expression quoting. Affected versions: Spring Data MongoDB 5.0.0 through 5.0.5; 4.5.0 through 4.5.11; 4.4.0 through 4.4.14; 4.3.0 through 4.3.16; 4.2.0 through 4.2.15; 4.1.0 through 4.1.14; 4.0.0 through 4.0.15; 3.4.0 through 3.4.19.

Affected products

Spring Data MongoDB: from 3.4.0 before 3.4.20; from 4.0.0 through 4.0.15; from 4.1.0 through 4.1.14; from 4.2.0 through 4.2.15; from 4.3.0 before 4.3.17; from 4.4.0 before 4.4.15 — fixed in 3.4.20, 4.3.17, 4.4.15, 4.5.11.1, 5.0.5.1
Spring Data MongoDB: from 5.0.0 before 5.0.6; from 4.5.0 before 4.5.12; from 4.4.0 before 4.4.15; from 4.3.0 before 4.3.17; from 4.2.0 before 4.2.16; from 4.1.0 before 4.1.15 — fixed in 5.0.6, 4.5.12, 4.4.15, 4.3.17, 4.2.16, 4.1.15

How to fix

Upgrade to a fixed version: Spring Data MongoDB 3.4.20, 4.3.17, 4.4.15, 4.5.11.1; Spring Data MongoDB 5.0.6, 4.5.12, 4.4.15, 4.3.17. Check the vendor advisory for mitigations.

References

https://spring.io/security/cve-2026-41696

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