CVE-2023-3982Public exploitNetwork attack vector

Stored XSS via executable SVG asset uploads

Published Jul 27, 2023 · Updated Oct 15, 2024

Stored XSS in the asset uploader in Omeka S before 4.0.2 allows remote authenticated users to execute JavaScript through SVG files. AssetAdapter accepts SVG MIME types as assets without removing embedded scripts, so a crafted SVG remains executable when opened directly. Author-level access is sufficient to upload the asset; opening it runs the attacker's script in the site's origin, exposing or altering accessible content and session data.

CVSS severity4.8
Medium
EPSS probability0.46%
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 the asset uploader in Omeka S before 4.0.2 allows remote authenticated users to execute JavaScript through SVG files. AssetAdapter accepts SVG MIME types as assets without removing embedded scripts, so a crafted SVG remains executable when opened directly. Author-level access is sufficient to upload the asset; opening it runs the attacker's script in the site's origin, exposing or altering accessible content and session data.

The record

CVE
CVE-2023-3982
Published
Jul 27, 2023
Updated
Oct 15, 2024
Vendor
Omeka
Product
Omeka S
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2024Record 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=0 <4.0.2
  2. Affected versionversion=unspecified <4.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Omeka · Omeka Sversion=0 <4.0.2; version=unspecified <4.0.2

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
5.4huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

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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