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Heap out-of-bounds write in Scribus PSD image loader

Priority LOW 38CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Scribus before 1.6.7 and 1.7.x before 1.7.4 contains a heap out-of-bounds write in the scimgdataloader_psd loader, which uses unchecked values from PSD files as lookup array indexes (CWE-787). An attacker can convince a user to place or import a crafted PSD file, corrupting heap memory and causing crashes or potentially code execution as the user.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

Scribus before 1.6.7 and 1.7.x before 1.7.4 contains a heap out-of-bounds write vulnerability in the scimgdataloader_psd loader that uses unchecked PSD file values as lookup array indexes. Attackers can convince users to place or import a crafted PSD file to corrupt heap memory, causing crashes and potentially code execution as the user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00196 9th percentileScored 2026-11-07
Fix Fixed Scribus (Scribus): 1.6.7, 1.7.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ScribusScribusbefore 1.6.7; 1.7.0 to before 1.7.41.6.7, 1.7.4Patch availableCNA
  • Scribus VendorScribus Affected before 1.6.7; 1.7.0 to before 1.7.4 Fixed in 1.6.7, 1.7.4 Patch available CNA

Remediation

Upgrade Scribus to version 1.6.7 or 1.7.4. The sources list no advisory identifier for this fix.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

  • Fix · CNA Scribus (Scribus) Fixed in 1.6.7, 1.7.4

Fixed in the same release

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

  • Release ·

    Scribus 1.6.7, 1.7.4

    7 records Highest priority Priority LOW 7 LOW

    Other records, highest priority first

    • TI-2026-83163 Out-of-bounds memory access in Scribus SVM import pluginPriority LOW 38
    • TI-2026-83162 Heap buffer overflow in Scribus PICT image loaderPriority LOW 38
    • TI-2026-83161 Out-of-bounds write in Scribus Micrografx Draw importPriority LOW 38

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-104061
  2. 2026-10-30 Affected versions changed · Red Hat
  3. 2026-10-30 CVSS score added · Red Hat
  4. 2026-10-30 Alias added: GHSA-p49c-gchq-m6cv
  5. 2026-11-01 Priority changed: MEDIUM → LOW
  6. 2026-11-02 Title updated · CNA
  7. 2026-11-02 Fix available: Scribus/[email protected] · CNA
  8. 2026-11-02 1 new reference · CNA
  9. 2026-11-05 CISA SSVC decision points changed

References

  • TI-2026-83163 Out-of-bounds memory access in Scribus SVM import plugin CVSS 4.0HIGH 8.5
  • TI-2026-83162 Heap buffer overflow in Scribus PICT image loader CVSS 4.0HIGH 8.5
  • TI-2026-83161 Out-of-bounds write in Scribus Micrografx Draw import CVSS 4.0HIGH 8.5
  • TI-2026-83160 Heap overflow in Scribus TIFF loader can crash it or run code CVSS 4.0HIGH 8.5
  • TI-2026-83158 Scribus PICT Loader Heap Buffer Overflow via bytesPerLine CVSS 4.0HIGH 8.5
  • TI-2026-83159 Out-of-bounds read in Scribus PICT image loader CVSS 4.0MEDIUM 6.9

Sources