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Vulnerability Details :

CVE-2026-33812

Summary
Assigner-Go
Assigner Org ID-1bb62c36-49e3-4200-9d77-64a1400537cc
Published At-21 Apr, 2026 | 19:21
Updated At-21 Apr, 2026 | 20:43
Rejected At-
Credits

Excessive memory allocation when decoding malicious SFNT in golang.org/x/image

Parsing a malicious font file can cause excessive memory allocation.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Go
Assigner Org ID:1bb62c36-49e3-4200-9d77-64a1400537cc
Published At:21 Apr, 2026 | 19:21
Updated At:21 Apr, 2026 | 20:43
Rejected At:
▼CVE Numbering Authority (CNA)
Excessive memory allocation when decoding malicious SFNT in golang.org/x/image

Parsing a malicious font file can cause excessive memory allocation.

Affected Products
Vendor
golang.org/x/image
Product
golang.org/x/image/font/sfnt
Collection URL
https://pkg.go.dev
Package Name
golang.org/x/image/font/sfnt
Program Routines
  • source.view
  • Collection.Font
  • Font.GlyphAdvance
  • Font.GlyphBounds
  • Font.GlyphIndex
  • Font.GlyphName
  • Font.Kern
  • Font.LoadGlyph
  • Font.Name
  • Font.WriteSourceTo
  • Parse
  • ParseCollection
  • ParseCollectionReaderAt
  • ParseReaderAt
Default Status
unaffected
Versions
Affected
  • From 0 before 0.39.0 (semver)
Problem Types
TypeCWE IDDescription
N/AN/ACWE-789: Memory Allocation with Excessive Size Value
Type: N/A
CWE ID: N/A
Description: CWE-789: Memory Allocation with Excessive Size Value
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Andy Gill, ZephrSec Ltd
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://go.dev/cl/761180
N/A
https://go.dev/issue/78382
N/A
https://pkg.go.dev/vuln/GO-2026-4962
N/A
Hyperlink: https://go.dev/cl/761180
Resource: N/A
Hyperlink: https://go.dev/issue/78382
Resource: N/A
Hyperlink: https://pkg.go.dev/vuln/GO-2026-4962
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
3.16.1MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@golang.org
Published At:21 Apr, 2026 | 20:16
Updated At:22 Apr, 2026 | 21:24

Parsing a malicious font file can cause excessive memory allocation.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.1MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CPE Matches
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://go.dev/cl/761180security@golang.org
N/A
https://go.dev/issue/78382security@golang.org
N/A
https://pkg.go.dev/vuln/GO-2026-4962security@golang.org
N/A
Hyperlink: https://go.dev/cl/761180
Source: security@golang.org
Resource: N/A
Hyperlink: https://go.dev/issue/78382
Source: security@golang.org
Resource: N/A
Hyperlink: https://pkg.go.dev/vuln/GO-2026-4962
Source: security@golang.org
Resource: N/A

Change History

0
Information is not available yet

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