VulnerabilityPublished 6 Nov 2026

CVE-2026-85726: chartbrew · Improper Neutralization of Special Elements in Data Query Logic

Affects chartbrewSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 5.2.3 soon.

Data as of 6 Nov 2026, 21:19 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CNA (GitHub_M)	CVSS 3.1	7.5

Patch: Available – fixed in 5.2.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Nov 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 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade chartbrew to 5.2.3.

Affected software

Product	Affected	Fixed in
chartbrewchartbrew	Affected <5.2.3	Fixed in 5.2.3

AI-suggested

Upgrade Chartbrew to version 5.2.3 or later, where this vulnerability is fixed. No other mitigation is required as the fix addresses the improper escaping of date-typed variables in MongoDB queries. Ensure that public, shareable, or embedded charts are not using vulnerable versions.

Description

CVE-2026-85726 is a high-severity vulnerability in Chartbrew versions prior to 5.2.3. It involves improper neutralization of special elements in MongoDB query logic when a date-typed variable is placed inside a quoted query placeholder. An unauthenticated attacker can craft a URL filter to break out of the quoted literal and alter the query logic, enabling blind extraction of any field from the queried MongoDB collection. The vulnerability affects publicly accessible charts that use date variables in quoted placeholders. This issue is fixed in Chartbrew version 5.2.3.

Impact

An unauthenticated attacker can exploit this vulnerability to perform blind data extraction from MongoDB collections queried by public or embedded charts in Chartbrew. This can lead to disclosure of sensitive information, including secrets not intended for display. The attack does not allow data modification or denial of service but compromises confidentiality. The vulnerability has a CVSS 3.1 score of 7.5 (high severity), reflecting network attack vector, low complexity, no privileges required, no user interaction, and high confidentiality impact.

Summary

Chartbrew is an open-source web application that connects to databases and APIs to create charts. In versions before 5.2.3, a date-typed MongoDB variable inside a quoted query placeholder was inserted as an unescaped string, unlike other data types which were safely escaped or coerced. This flaw allows an unauthenticated user to supply a crafted URL filter to a public, shareable, or embedded MongoDB chart, breaking out of the quoted literal and modifying query logic. The attack enables a blind Boolean oracle that can extract any field from the queried collection character-by-character, including sensitive fields not displayed by the chart. The vulnerability requires the chart to be externally reachable and use the vulnerable date-in-quoted-placeholder query branch. The extraction is read-only and limited to one collection per request. The issue is resolved in version 5.2.3.

CWE-943Improper Neutralization of Special Elements in Data Query Logic (opens in a new tab)
Class weakness
The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query.
OWASP Cheat Sheets
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V1.5.1 (opens in a new tab)
Attack patterns
NoSQL Injection (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Nov 2026, 21:19 UTC

WeaknessesCWE-943

Technical details

References

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