JLSEC-2026-551

openjpeg v 2.5.0 was discovered to contain a NULL pointer dereference via the component /openjp2/dwt.c...

JLSEC-2026-552

OpenJPEG is an open-source JPEG 2000 codec. In OpenJPEG from 2.5.1 through 2.5.3, a call to opjjp2readheader may lead to OOB heap memory write when the data stream pstream is too short and pimage is not initialized...

JLSEC-2026-541

A flaw was found in openjpeg's src/lib/openjp2/t2.c in versions prior to 2.4.0. This flaw allows an attacker to provide crafted input to openjpeg during conversion and encoding, causing an out-of-bounds write. The highest threat from this vulnerability is to confidentiality, integrity, as well as...

JLSEC-2026-543

OpenJPEG through 2.3.1 has a heap-based buffer overflow in opjt1clbldecodeprocessor in openjp2/t1.c because of lack of opjj2kupdateimagedimensions validation...

JLSEC-2026-539

There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of this flaw is to application availability...

JLSEC-2026-542

There's a flaw in src/lib/openjp2/pi.c of openjpeg in versions prior to 2.4.0. If an attacker is able to provide untrusted input to openjpeg's conversion/encoding functionality, they could cause an out-of-bounds read. The highest impact of this flaw is to application availability...

JLSEC-2026-550

A flaw was found in OpenJPEG. A resource exhaustion can occur in the opjt1decodecblks function in tcd.c through a crafted image file, causing a denial of service...

JLSEC-2026-534

jp2/opjdecompress.c in OpenJPEG through 2.3.1 has a use-after-free that can be triggered if there is a mix of valid and invalid files in a directory operated on by the decompressor. Triggering a double-free may also be possible. This is related to calling opjimagedestroy twice...

JLSEC-2026-536

A flaw was found in OpenJPEG’s encoder. This flaw allows an attacker to pass specially crafted x,y offset input to OpenJPEG to use during encoding. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability...

PT-2026-47108

OpenJPEG through 2.3.1 has a heap-based buffer overflow in opj t1 clbl decode processor in openjp2/t1.c because of lack of opj j2k update image dimensions validation...

PT-2026-47107

There's a flaw in src/lib/openjp2/pi.c of openjpeg in versions prior to 2.4.0. If an attacker is able to provide untrusted input to openjpeg's conversion/encoding functionality, they could cause an out-of-bounds read. The highest impact of this flaw is to application availability...

PT-2026-47112

OpenJPEG is an open-source JPEG 2000 codec. In OpenJPEG from 2.5.1 through 2.5.3, a call to opj jp2 read header may lead to OOB heap memory write when the data stream p stream is too short and p image is not initialized...

PT-2026-47102

A flaw was found in OpenJPEG’s encoder in the opj dwt calc explicit stepsizes function. This flaw allows an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest threat from this vulnerability is to system availability...

PT-2026-47109

Integer Overflow in OpenJPEG v2.4.0 allows remote attackers to crash the application, causing a Denial of Service DoS. This occurs when the attacker uses the command line option "-ImgDir" on a directory that contains 1048576 files...

PT-2026-47111

openjpeg v 2.5.0 was discovered to contain a NULL pointer dereference via the component /openjp2/dwt.c...

PT-2026-47099

jp2/opj decompress.c in OpenJPEG through 2.3.1 has a use-after-free that can be triggered if there is a mix of valid and invalid files in a directory operated on by the decompressor. Triggering a double-free may also be possible. This is related to calling opj image destroy twice...

PT-2026-47103

There's a flaw in openjpeg in versions prior to 2.4.0 in src/lib/openjp2/pi.c. When an attacker is able to provide crafted input to be processed by the openjpeg encoder, this could cause an out-of-bounds read. The greatest impact from this flaw is to application availability...

PT-2026-47110

A flaw was found in the opj2 decompress program in openjpeg2 2.4.0 in the way it handles an input directory with a large number of files. When it fails to allocate a buffer to store the filenames of the input directory, it calls free on an uninitialized pointer, leading to a segmentation fault an...

PT-2026-47101

A flaw was found in OpenJPEG’s encoder. This flaw allows an attacker to pass specially crafted x,y offset input to OpenJPEG to use during encoding. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability...

PT-2026-47104

There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of this flaw is to application availability...