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-2026-540

A flaw was found in OpenJPEG in versions prior to 2.4.0. This flaw allows an attacker to provide specially crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest threat from this vulnerability is system availability...

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-2026-542

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-2026-546

A heap-based buffer overflow was found in openjpeg in color.c:379:42 in sycc420torgb when decompressing a crafted .j2k file. An attacker could use this to execute arbitrary code with the permissions of the application compiled against openjpeg...

JLSEC-2026-533

In OpenJPEG 2.3.1, there is excessive iteration in the opjt1encodecblks function of openjp2/t1.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted bmp file. This issue is similar to CVE-2018-6616...

JLSEC-2026-544

opjt1clbldecodeprocessor in openjp2/t1.c in OpenJPEG 2.3.1 through 2020-01-28 has a heap-based buffer overflow in the qmfbid==1 case, a different issue than CVE-2020-6851...

JLSEC-2026-548

A flaw was found in OpenJPEG. Maliciously constructed pictures can cause the program to enter a large loop and continuously print warning messages on the terminal...

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-2026-47101

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-2026-47099

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-2026-47107

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-2026-47104

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...

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-2026-47105

A flaw was found in OpenJPEG in versions prior to 2.4.0. This flaw allows an attacker to provide specially crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest threat from this vulnerability is system availability...

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-2026-47106

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...

PT-2026-47111

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

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-2026-47109

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...