CVE-2026-33812 (GCVE-0-2026-33812)

Vulnerability from cvelistv5 – Published: 2026-04-21 19:21 – Updated: 2026-04-21 20:43
VLAI
Title
Excessive memory allocation when decoding malicious SFNT in golang.org/x/image
Summary
Parsing a malicious font file can cause excessive memory allocation.
Severity
6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-21 20:43 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
Go CNA under the Google root
CNA scorecard E 42/100 over 76 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
golang.org/x/image golang.org/x/image/font/sfnt Affected: 0 , < 0.39.0 (semver)
guessed Create a notification for this product.
Credits
Andy Gill, ZephrSec Ltd
Show details on NVD website
To clipboard 

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            {
              "name": "Font.GlyphBounds"
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            {
              "name": "Font.GlyphIndex"
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            {
              "name": "Font.GlyphName"
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            {
              "name": "Font.Kern"
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            {
              "name": "Font.LoadGlyph"
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            {
              "name": "Font.Name"
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            {
              "name": "Font.WriteSourceTo"
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          {
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            "value": "El an\u00e1lisis de un archivo de fuente malicioso puede causar una asignaci\u00f3n excesiva de memoria."
          }
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