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TI-2026-69992 Aliases CVE-2026-101094GHSA-h877-95q5-3r86

Heap buffer over-read in Affinity by Canva when parsing document text

Priority LOW 16CWE-126Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
Low · None · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

The Affinity by Canva application before 3.3.1 does not correctly handle incomplete UTF-8 character sequences when parsing text in Affinity document files, which causes a heap buffer over-read (CWE-126). A threat actor can craft a document that, when a user opens it in Affinity, discloses contents of adjacent heap memory in the document text or crashes the application.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

The Affinity by Canva application before 3.3.1 (October 2026 release) did not correctly handle incomplete UTF-8 character sequences when parsing text in Affinity document files, leading to a heap buffer over-read. A threat actor could craft an Affinity document that, when opened by a user in Affinity, could disclose the contents of adjacent heap memory in the document's text or result in an application crash.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00097 0th percentileScored 2026-11-07
Fix Fixed affinity (canva): 3.3.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Canvaaffinitybefore 3.3.13.3.1Patch availableCNA
  • affinity VendorCanva Affected before 3.3.1 Fixed in 3.3.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:canva:affinity:*:*:*:*:*:*:*:*——Canva
  • cpe:2.3:a:canva:affinity:*:*:*:*:*:*:*:* Versions — — ·Canva

Remediation

Affinity by Canva users should update to version 3.3.1, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA affinity (canva) Fixed in 3.3.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    canva affinity 3.3.1

    7 records Highest priority Priority LOW 7 LOW

    Other records, highest priority first

    • TI-2026-69991 Heap-based buffer overflow in Affinity by Canva QuickLook previewsPriority LOW 21
    • TI-2026-70020 Out-of-bounds read in Affinity by Canva raster image parsingPriority LOW 19
    • TI-2026-70019 Heap buffer over-read in Affinity by Canva when parsing document filesPriority LOW 16
    Show all 7 records →

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-101094
  2. 2026-10-09 Alias added: GHSA-h877-95q5-3r86
  3. 2026-10-10 CISA SSVC decision points changed

References

Other 1

  • TI-2026-82266 Ortto WordPress plugin missing authentication on config updates CVSS 3.1HIGH 8.6
  • TI-2026-58447 Improper verification of communication channel in Canva CVSS 3.1CRITICAL 9.6
  • TI-2026-58453 The Canva Android App before 2.376.0 did not restrict the headers returned to an external… CVSS 3.1HIGH 8.8
  • TI-2025-40808 Type confusion in Canva Affinity CVSS 3.1HIGH 7.8
  • TI-2025-39740 Out-of-bounds write in Canva Affinity CVSS 3.1HIGH 7.8
  • TI-2026-56261 Stack-based buffer overflow in Canva Affinity CVSS 3.1HIGH 7.7
See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences