CVE-2023-48866Network attack vector

Cookie theft via unsanitized stored fields

Published Dec 4, 2023 · Updated Sep 29, 2025

Stored XSS in Grocy 4.0.3 and earlier allows remote authenticated users to obtain a victim's cookies through crafted API object data. The recipes preparation and shopping_lists note endpoints store attacker-controlled markup that the shopping-list view later renders as script. Low-privileged access is required to create the object, and a victim must open the shopping-list menu before cookie data is exposed.

CVSS severity5.4
Medium
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Grocy 4.0.3 and earlier allows remote authenticated users to obtain a victim's cookies through crafted API object data. The recipes preparation and shopping_lists note endpoints store attacker-controlled markup that the shopping-list view later renders as script. Low-privileged access is required to create the object, and a victim must open the shopping-list menu before cookie data is exposed.

The record

CVE
CVE-2023-48866
Published
Dec 4, 2023
Updated
Sep 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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