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ImageMagick Security Policy Bypass via Coder Domain

Priority LOW 29CWE-863Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 2 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-863.

Summary

ImageMagick before 6.9.13-56 and before 7.1.2-31 in the 7.x line allows a security policy bypass when a policy uses coder, rather than module, as its domain. An attacker can supply a crafted image to evade coder-based policy restrictions, so ImageMagick processes formats the administrator meant to block. The CNA rates this MEDIUM with CVSS 4.0 base score 6.9, and CWE-863 (Incorrect Authorization) applies. Red Hat rates it Moderate; Red Hat Enterprise Linux 6 has no fix planned and Red Hat Enterprise Linux 7 has no fix available.

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

Description from the CNA

ImageMagick before 6.9.13-56 and 7.x before 7.1.2-31 allows a security policy bypass when a policy uses coder, rather than module, as its domain. An attacker can supply a crafted image to evade coder-based policy restrictions, causing ImageMagick to process formats the administrator intended to block.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0013 2nd percentileScored 2026-10-09
Fix Partial ImageMagick (ImageMagick): 7.1.2-31, 6.9.13-56Red Hat: 2 without a fix

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
ImageMagickImageMagickbefore 7.1.2-317.1.2-31Patch availableCNA
ImageMagickImageMagickbefore 6.9.13-566.9.13-56Patch availableCNA
  • ImageMagick VendorImageMagick Affected before 7.1.2-31 Fixed in 7.1.2-31 Patch available CNA
  • ImageMagick VendorImageMagick Affected before 6.9.13-56 Fixed in 6.9.13-56 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:imagemagick:imagemagick:*:*:*:*:*:*:*:*——ImageMagick
  • cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:* Versions — — ·ImageMagick

Remediation

Upgrade ImageMagick 6.x to 6.9.13-56 or later, and ImageMagick 7.x to 7.1.2-31 or later. Red Hat Enterprise Linux 6 and 7 have no fix, so restrict or remove coder-based policy rules on those systems until a fix is available.

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

  • Fix · CNA ImageMagick (ImageMagick) Fixed in 7.1.2-31
  • Fix · CNA ImageMagick (ImageMagick) Fixed in 6.9.13-56

Fixed in the same release

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

  • Release ·

    ImageMagick 7.1.2-31

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2026-69522 Resource leak in ImageMagick magick script handlingPriority LOW 36
    • TI-2026-69521 ImageMagick Denial of Service via MVG DecoderPriority LOW 36
    • TI-2026-69527 Invalid memory free in ImageMagick MVG decoder crashes applicationPriority LOW 35
  • Release ·

    ImageMagick 6.9.13-56

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2026-69521 ImageMagick Denial of Service via MVG DecoderPriority LOW 36
    • TI-2026-69527 Invalid memory free in ImageMagick MVG decoder crashes applicationPriority LOW 35
    • TI-2026-69526 Code injection in ImageMagick PostScript codersPriority LOW 26

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-08 Threatist record created from CVE-2026-105403
  2. 2026-10-08 Alias added: GHSA-78ww-3q48-4x48
  3. 2026-10-08 CISA SSVC decision points changed
  4. 2026-10-08 Priority changed: MEDIUM → LOW
  5. 2026-10-09 Affected versions changed · Red Hat
  6. 2026-10-09 CVSS score added · Red Hat

References

  • TI-2016-03144 The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT… KEVCVSS 3.1HIGH 8.4
  • TI-2023-16996 Improper input validation in ImageMagick CVSS 3.1CRITICAL 9.8
  • TI-2016-03148 The (1) HTTP and (2) FTP coders in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1… KEVCVSS 3.1MEDIUM 5.5
  • TI-2016-03145 The EPHEMERAL coder in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allows remote… KEVCVSS 3.1MEDIUM 5.5
  • TI-2025-35690 ImageMagick BlobStream Forward-Seek Under-Allocation CVSS 3.1CRITICAL 9.8
  • TI-2025-33094 ImageMagick has Stack Buffer Overflow in image.c CVSS 3.1CRITICAL 9.8
See all 915 →

Sources