JLSEC-2026-921 imagemagick: integer overflows in MNG magnification

Vulnerability Details The magnified size calculations in ReadOneMNGIMage in coders/png.c are unsafe and can overflow, leading to memory corruption. The source snippet below is heavily abbreviated due to the size of the function, but hopefully the important points are captured. c static Image...

JLSEC-2026-1003

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions below 7.1.2-19 and 6.9.13-44 contain a heap use-after-free vulnerability that can cause a crash when reading and printing values from an invalid XMP profile. This issue has been fixed in versio...

JLSEC-2026-1043 ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex...

ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting a...

JLSEC-2026-1000 ImageMagick has a heap buffer overflow (WRITE) in the YAML and JSON encoders.

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-19, a crafted image could result in an out of bounds heap write when writing a yaml or json output, resulting in a crash. This issue has been fixed in version 7.1.2-19...

JLSEC-2026-1055 ImageMagick before 7.1.2-19 contains a heap buffer overflow vulnerability in the FTXT encoder due...

ImageMagick before 7.1.2-19 contains a heap buffer overflow vulnerability in the FTXT encoder due to missing boundary checks when parsing ftxt:format. Remote attackers can trigger an out of bounds read by crafting malicious FTXT image files to cause denial of service or information disclosure...

JLSEC-2026-959 ImageMagick has Heap Out-of-Bounds Read in DCM Decoder (ReadDCMImage)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a heap out-of-bounds read vulnerability exists in the coders/dcm.c module. When processing DICOM files with a specific configuration, the decoder loop incorrect...

JLSEC-2026-989

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-16 and 6.9.13-41, when a memory allocation fails in the sixel encoder it would be possible to write past the end of a buffer on the stack. This vulnerability is fixed in 7.1.2-16 and...

JLSEC-2026-858

In GammaImage of /MagickCore/enhance.c, depending on the gamma value, it's possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability. The patch uses the PerceptibleReciprocal to prevent the...

JLSEC-2026-845

WriteOnePNGImage from coders/png.c the PNG coder has a for loop with an improper exit condition that can allow an out-of-bounds READ via heap-buffer-overflow. This occurs because it is possible for the colormap to have less than 256 valid values but the loop condition will loop 256 times,...

JLSEC-2026-852

In IntensityCompare of /magick/quantize.c, there are calls to PixelPacketIntensity which could return overflowed values to the caller when ImageMagick processes a crafted input file. To mitigate this, the patch introduces and uses the ConstrainPixelIntensity function, which forces the pixel...

JLSEC-2026-916 ImageMagick has a Heap Buffer Overflow in InterpretImageFilename

Heap Buffer Overflow in InterpretImageFilename Summary A heap buffer overflow was identified in the InterpretImageFilename function of ImageMagick. The issue stems from an off-by-one error that causes out-of-bounds memory access when processing format strings containing consecutive percent signs...

JLSEC-2026-1071 ImageMagick before 7.1.2-26 and 6.9.13-51 contains a memory leak in the hough lines operation:...

ImageMagick before 7.1.2-26 and 6.9.13-51 contains a memory leak in the hough lines operation: when a specific operation fails, a small memory leak occurs...

JLSEC-2026-823

In ImageMagick before 7.0.8-8, a NULL pointer dereference exists in the CheckEventLogging function in MagickCore/log.c...

JLSEC-2026-1016 ImageMagick: Stack overflow in fx operation

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-23, due to a missing depth check a stack overflow can occur in the fx operation by passing a crafted argument. This issue has been patched in version 7.1.2-23...

JLSEC-2026-825

In coders/bmp.c in ImageMagick before 7.0.8-16, an input file can result in an infinite loop and hang, with high CPU and memory consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file...

JLSEC-2026-941 ImageMagick: Out of bounds read in multiple coders read raw pixel data

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a heap buffer over-read vulnerability exists in multiple raw image format handles. The vulnerability occurs when processing images with -extract dimensions larg...

JLSEC-2026-951 ImageMagick has Global Buffer Overflow (OOB Read) via Negative Pixel Index in UIL and XPM Writer

The UIL and XPM image encoder do not validate the pixel index value returned by GetPixelIndex before using it as an array subscript. In HDRI builds, Quantum is a floating-point type, so pixel index values can be negative. An attacker can craft an image with negative pixel index values to trigger ...

JLSEC-2026-1002

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions below both 7.1.2-19 and 6.9.13-44, contain a heap out-of-bounds write in the JP2 encoder with when a user specifies an invalid sampling index. This issue has been fixed in versions 6.9.13-44 an...

JLSEC-2026-1041 ImageMagick: Policy Bypass in concatenate operation due to missing checks

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions prior to 7.1.2-26he, the -concatenate operation is missing policy checks, potentially resulting in both reading and writing to paths disallowed by the security policy. This issue has been...

JLSEC-2026-850

A flaw was found in ImageMagick in MagickCore/quantum-private.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger a heap buffer overflow. This would most likely lead to an impact to application availability, but could potentially lead to an impact to data...

JLSEC-2026-969 ImageMagick: Invalid MSL <map> can result in a use after free

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, the MSL interpreter crashes when processing a invalid element that causes it to use an image after it has been freed. Versions 7.1.2-15 and 6.9.13-40 contain a...

JLSEC-2026-1008 ImageMagick: Out-of-Bounds Read of a single byte in meta encoder

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-47 and 7.1.2-22, an off by one in the meta encoder could result in an out of bounds read of a single byte in the meta encoder. This issue has been patched in versions 6.9.13-47...

JLSEC-2026-1009 ImageMagick: Out-of-Bounds Read in connected components when the user supplies an invalid keep-top define

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-22, an invalid connected-components:keep-top value could result in a heap buffer over-read when performing the connected components operation. This issue has been...

JLSEC-2026-1017 ImageMagick: Heap Buffer Over-Write of a single byte in the JP2 encoder.

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, an incorrect check in the JP2 will result in an heap buffer over-write of a single byte when specifying certain options. This issue has been patched in versions...

JLSEC-2026-1074 ImageMagick before 7.1.2-26 and 6.9.x before 6.9.13-51 contains a memory leak in the YUV decoder...

ImageMagick before 7.1.2-26 and 6.9.x before 6.9.13-51 contains a memory leak in the YUV decoder that occurs when opening of the blob fails. Repeated triggering can lead to resource exhaustion denial of service...

JLSEC-2026-824

In ImageMagick before 7.0.8-8, a NULL pointer dereference exists in the GetMagickProperty function in MagickCore/property.c...

JLSEC-2026-864

A flaw was found in ImageMagick in MagickCore/statistic.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type unsigned long. This would most likely lead to an impact to application availability,...

JLSEC-2026-1078 ImageMagick before 7.1.2-26 and 6.9.13-51 contains a memory leak in the TIFF encoder when an...

ImageMagick before 7.1.2-26 and 6.9.13-51 contains a memory leak in the TIFF encoder when an invalid tiff:tile-geometry is specified. Supplying malformed tile geometry parameters causes allocated memory not to be released, which can lead to increased memory consumption...

JLSEC-2026-875

A heap based buffer overflow in coders/tiff.c may result in program crash and denial of service in ImageMagick before 7.0.10-45...

JLSEC-2026-963 ImageMagick has a heap buffer over-read in its MAP image decoder

A heap buffer over-read vulnerability exists in the MAP image decoder when processing crafted MAP files, potentially leading to crashes or unintended memory disclosure during image decoding. ================================================================= ==4070926==ERROR: AddressSanitizer:...

JLSEC-2026-956 Image Magick has a Memory Leak in coders/ashlar.c

Memory leak exists in coders/ashlar.c. The WriteASHLARImage allocates a structure. However, when an exception is thrown, the allocated memory is not properly released, resulting in a potential memory leak. ==78968== Memcheck, a memory error detector ==78968== Copyright C 2002-2022, and GNU GPL'd,...

JLSEC-2026-997 ImageMagick has an out-of-bounds read in sample operation

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, the -sample operation has an out of bounds read when an specific offset is set through the sample:offset define that could lead to an out of bounds read...

JLSEC-2026-857

In IntensityCompare of /MagickCore/quantize.c, a double value was being casted to int and returned, which in some cases caused a value outside the range of type int to be returned. The flaw could be triggered by a crafted input file under certain conditions when processed by ImageMagick. Red Hat...

JLSEC-2026-967 ImageMagick has a possible infinite loop in its JPEG encoder when using `jpeg:extent`

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a continue statement in the JPEG extent binary search loop in the jpeg encoder causes an infinite loop when writing persistently fails. An attacker can trigger ...

JLSEC-2026-998

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, Magick frees the memory of the XML tree via the DestroyXMLTree function; however, this process is executed recursively with no depth limit imposed. When...

JLSEC-2026-867

In ImageMagick versions before 7.0.9-0, there are outside the range of representable values of type 'float' at MagickCore/quantize.c...

JLSEC-2026-1047 ImageMagick before 7.1.2-18 contains a memory leak vulnerability in the META reader when...

ImageMagick before 7.1.2-18 contains a memory leak vulnerability in the META reader when processing APP1JPEG input paths. Attackers can trigger this memory leak by providing specially crafted APP1JPEG image files, causing denial of service through resource exhaustion...

JLSEC-2026-1054 ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses...

ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger this vulnerability by processing malicious PDB files to cause crashes or write a single zero byte to freed memory...

JLSEC-2026-840

A call to ConformPixelInfo in the SetImageAlphaChannel routine of /MagickCore/channel.c caused a subsequent heap-use-after-free or heap-buffer-overflow READ when GetPixelRed or GetPixelBlue was called. This could occur if an attacker is able to submit a malicious image file to be processed by...

JLSEC-2026-936

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability in the XBM image decoder ReadXBMImage allows an attacker to write controlled data past the allocated heap buffer when...

JLSEC-2026-1072 ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the JNG encoder when a blob...

ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the JNG encoder when a blob cannot be opened. Attackers can trigger the memory leak by providing malformed JNG files that fail blob operations, causing resource exhaustion...

JLSEC-2026-1015 ImageMagick: Use-After-Free in MSL decoder.

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2.23 and 6.9.13-48, a crafted MSL image can trigger a heap-use-after-free. Versions 7.1.2.23 and 6.9.13-48 fix the issue...

JLSEC-2026-942 ImageMagick: Possible memory leak in ASHLAR encoder

A memory leak in the ASHLAR image writer allows an attacker to exhaust process memory by providing a crafted image that results in small objects that are allocated but never freed. ==880062== Memcheck, a memory error detector ==880062== Copyright C 2002-2017, and GNU GPL'd, by Julian Seward et al...

JLSEC-2026-1022 ImageMagick has a Heap Buffer Underwrite in the Floyd-Steinberg depth dithering method

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-24, when using an image with mask the Floyd-Steinberg dithering method it will cause a negative heap buffer over-write. This issue has been patched in version 7.1.2-24...

JLSEC-2026-1040 ImageMagick: Heap Buffer Over-Write in JP2 encoder when due to incorrect handling of arguments

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-26, an incorrect handling of arguments can cause a heap buffer over-write in the JP2 encoder. This issue has been fixed in version7.1.2-26...

JLSEC-2026-948 ImageMagick has NULL Pointer Dereference in ClonePixelCacheRepository via crafted image

A NULL pointer dereference in ClonePixelCacheRepository allows a remote attacker to crash any application linked against ImageMagick by supplying a crafted image file, resulting in Denial of Service. AddressSanitizer:DEADLYSIGNAL =================================================================...

JLSEC-2026-1068 ImageMagick before 7.1.2-26 and 6.9.13-51 contains an information disclosure vulnerability: when...

ImageMagick before 7.1.2-26 and 6.9.13-51 contains an information disclosure vulnerability: when a profile is displayed with the identify command and the profile value is not printable, a single byte at the end of the profile can be printed read past the profile boundary. This behavior occurs whe...

JLSEC-2026-940 ImageMagick: Infinite loop vulnerability when parsing a PCD file

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, when a PCD file does not contain a valid Sync marker, the DecodeImage function becomes trapped in an infinite loop while searching for the Sync marker, causing...

JLSEC-2026-958 ImageMagick: MSL - Stack overflow in ProcessMSLScript

Summary Magick fails to check for circular references between two MSLs, leading to a stack overflow. Details After reading a.msl using magick, the following is displayed: MSLStartElement - ReadImage - ReadMSLImage - ProcessMSLScript - xmlParseChunk - xmlParseTryOrFinish - MSLStartElement bash...

JLSEC-2026-971 ImageMagick has a heap Buffer Over-read in its DJVU image format handler

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a heap buffer over-read vulnerability exists in the DJVU image format handler. The vulnerability occurs due to integer truncation when calculating the stride ro...