CVE-2023-3384Network attack vector

Stored script execution via unvalidated image labels

Published Jul 24, 2023 · Updated Aug 6, 2026

Stored XSS in Red Hat Quay allows remote authenticated users to run script in another user’s browser through a malicious image label. Quay applies the validation.py label regex to UI and backend input but omits that validation when importing labels from container images. The attacker must publish a crafted image to a public registry, and execution requires another user to view its label in the Quay interface.

CVSS severity5.4
Medium
EPSS probability0.48%
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 Red Hat Quay allows remote authenticated users to run script in another user’s browser through a malicious image label. Quay applies the validation.py label regex to UI and backend input but omits that validation when importing labels from container images. The attacker must publish a crafted image to a public registry, and execution requires another user to view its label in the Quay interface.

The record

CVE
CVE-2023-3384
Published
Jul 24, 2023
Updated
Aug 6, 2026
Vendor
389 Directory Server
Product
Red Hat Quay
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat QuayAffected 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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1189Drive-by Compromise

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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