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Temporary file leak in ImageMagick JNG decoder

Priority LOW 37CWE-459Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains an incomplete cleanup flaw (CWE-459) in its JNG decoder. The decoder fails to remove temporary files when it processes crafted input. An unauthenticated remote attacker can submit crafted JNG files for processing to repeatedly leak temporary files, consuming disk space and degrading availability.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains an incomplete cleanup flaw in the JNG decoder that fails to remove temporary files when processing crafted input. Attackers can submit crafted JNG files for processing to repeatedly leak temporary files, consuming disk space and degrading availability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00384 32nd percentileScored 2026-11-07
Fix Partial ImageMagick (ImageMagick): 7.1.2-32, 6.9.13-57Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
ImageMagickImageMagick7.0.0-0 to before 7.1.2-327.1.2-32Patch availableCNA
ImageMagickImageMagickbefore 6.9.13-576.9.13-57Patch availableCNA
  • ImageMagick VendorImageMagick Affected 7.0.0-0 to before 7.1.2-32 Fixed in 7.1.2-32 Patch available CNA
  • ImageMagick VendorImageMagick Affected before 6.9.13-57 Fixed in 6.9.13-57 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*before 6.9.13-57; 7.0.0-0 to before 7.1.2-32VulnerableImageMagick
  • cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:* Versions before 6.9.13-57; 7.0.0-0 to before 7.1.2-32 Vulnerable ·ImageMagick

Remediation

Fixed in ImageMagick 6.9.13-57 and ImageMagick 7.1.2-32. 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 · 2026-11-06

  • Fix · CNA ImageMagick (ImageMagick) Fixed in 7.1.2-32
  • Fix · CNA ImageMagick (ImageMagick) Fixed in 6.9.13-57

Fixed in the same release

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

  • Release ·

    ImageMagick 7.1.2-32

    25 records Highest priority Priority LOW 25 LOW

    Other records, highest priority first

    • TI-2026-71081 Heap buffer over-read in ImageMagick via crafted XMP profilePriority LOW 37
    • TI-2026-71078 Memory leak in ImageMagick SVG encoder enables denial of servicePriority LOW 37
    • TI-2026-71085 Uninitialized memory disclosure in ImageMagick JPEG decoderPriority LOW 36
  • Release ·

    ImageMagick 6.9.13-57

    16 records Highest priority Priority LOW 16 LOW

    Other records, highest priority first

    • TI-2026-71078 Memory leak in ImageMagick SVG encoder enables denial of servicePriority LOW 37
    • TI-2026-71085 Uninitialized memory disclosure in ImageMagick JPEG decoderPriority LOW 36
    • TI-2026-71083 Stack overflow in ImageMagick MSL decoder causes denial of servicePriority LOW 36

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. 2026-10-12 Threatist record created from CVE-2026-109276
  2. 2026-10-12 Alias added: GHSA-hh36-f88v-939q
  3. 2026-10-13 Affected versions changed · Red Hat
  4. 2026-10-13 CVSS score added · Red Hat
  5. 2026-10-13 Priority changed: MEDIUM → LOW
  6. 2026-10-18 CISA SSVC decision points changed

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 888 →

Sources