CVE-2026-29112Network attack vector

Service interruption via unbounded SVG dimensions

Published Mar 18, 2026 · Updated Mar 18, 2026

Denial of service in DiceBear before 9.4.0 allows remote attackers to exhaust server memory through crafted SVG dimensions. The @dicebear/converter ensureSize() function trusts width and height attributes from untrusted SVG input when sizing rasterization canvases, allowing extremely large values to drive excessive allocation. Exploitation requires a server-side application to pass attacker-supplied SVGs into the PNG, JPEG, WebP, or AVIF conversion functions; self-generated avatars do not expose the condition.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in DiceBear before 9.4.0 allows remote attackers to exhaust server memory through crafted SVG dimensions. The @dicebear/converter ensureSize() function trusts width and height attributes from untrusted SVG input when sizing rasterization canvases, allowing extremely large values to drive excessive allocation. Exploitation requires a server-side application to pass attacker-supplied SVGs into the PNG, JPEG, WebP, or AVIF conversion functions; self-generated avatars do not expose the condition.

The record

CVE
CVE-2026-29112
Published
Mar 18, 2026
Updated
Mar 18, 2026
Vendor
DiceBear
Product
DiceBear
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 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=< 9.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DiceBear · DiceBearversion=< 9.4.0

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

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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