CVE-2026-41696Network attack vector

Unauthorized data exposure via regex quoting breakout

Published Jun 9, 2026 · Updated Jun 9, 2026

Query injection in affected Spring Data MongoDB releases allows remote attackers to read unauthorized data via crafted regex input. ParameterBindingJsonReader inserts a bound value between Java regex literal-quoting markers but fails to neutralize an attacker-supplied quote terminator. Exposure requires an @Query repository method with quoted regex binding to receive untrusted input, enabling filter bypass and unauthorized reads.

CVSS severity5.9
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Query injection in affected Spring Data MongoDB releases allows remote attackers to read unauthorized data via crafted regex input. ParameterBindingJsonReader inserts a bound value between Java regex literal-quoting markers but fails to neutralize an attacker-supplied quote terminator. Exposure requires an @Query repository method with quoted regex binding to receive untrusted input, enabling filter bypass and unauthorized reads.

The record

CVE
CVE-2026-41696
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
Spring
Product
Spring Data MongoDB
Classifications
CWE-943, CAPEC-676
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.4.0 <3.4.20
  2. Affected versionversion=4.0.0 <4.0.16
  3. Affected versionversion=4.1.0 <4.1.15
  4. Affected versionversion=4.2.0 <4.2.16
  5. Affected versionversion=4.3.0 <4.3.17
  6. Affected versionversion=4.4.0 <4.4.15
  7. Affected versionversion=4.5.0 <4.5.12
  8. Affected versionversion=5.0.0 <5.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · Spring Data MongoDBversion=3.4.0 <3.4.20; version=4.0.0 <4.0.16; version=4.1.0 <4.1.15; version=4.2.0 <4.2.16; version=4.3.0 <4.3.17; version=4.4.0 <4.4.15; version=4.5.0 <4.5.12; version=5.0.0 <5.0.6

Published CVSS scores

5.9VMwareCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-943Improper Neutralization of Special Elements in Data Query Logic
CAPEC-676NoSQL Injection

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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