JLSEC-2026-598

An issue was discovered in yasm version 1.3.0. There is a use-after-free in error in modules/preprocs/nasm/nasm-pp.c...

JLSEC-2026-599

A memory leak issue discovered in YASM v.1.3.0 allows a local attacker to cause a denial of service via the newToken function in the modules/preprocs/nasm/nasm-pp:1512...

JLSEC-2026-565 In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the...

In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for TPM-backed RSA and ECC keys...

JLSEC-2026-557

Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service...

JLSEC-2026-547

A flaw was found in the opj2decompress 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 and...

JLSEC-2026-532

There's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability...

JLSEC-2026-398

curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTPS URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request HTTP...

JLSEC-2026-301

HDF5 Library through 1.14.3 may attempt to dereference uninitialized values in h5toolsstrsprint in tools/lib/h5toolsstr.c called from h5toolsdumpsimpledata in tools/lib/h5toolsdump.c...

JLSEC-2026-224 SM2 Decryption Buffer Overflow

In order to decrypt SM2 encrypted data an application is expected to call the API function EVPPKEYdecrypt. Typically an application will call this function twice. The first time, on entry, the "out" parameter can be NULL and, on exit, the "outlen" parameter is populated with the buffer size...

JLSEC-2026-243 Issue summary: A bug has been identified in the processing of key and initialisation vector (IV)...

Issue summary: A bug has been identified in the processing of key and initialisation vector IV lengths. This can lead to potential truncation or overruns during the initialisation of some symmetric ciphers. Impact summary: A truncation in the IV can result in non-uniqueness, which could result in...

JLSEC-2026-269 Issue summary: An invalid or NULL pointer dereference can happen in an application processing a...

Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS12 file. Impact summary: An application processing a malformed PKCS12 file can be caused to dereference an invalid or NULL pointer on memory read, resulting in a Denial of Service. A type...

JLSEC-2026-258 Issue summary: The 'openssl dgst' command-line tool silently truncates input data to 16MB when using...

Issue summary: The 'openssl dgst' command-line tool silently truncates input data to 16MB when using one-shot signing algorithms and reports success instead of an error. Impact summary: A user signing or verifying files larger than 16MB with one-shot algorithms such as Ed25519, Ed448, or ML-DSA m...

JLSEC-2026-209

Leptonica before 1.80.0 allows a heap-based buffer over-read in pixFewColorsOctcubeQuantMixed in colorquant1.c...

JLSEC-2025-232 Side channel in RSA key generation and operations (SSBleed, M-Step)

Vulnerability Mbed TLS's modular inversion routine and GCD routine are vulnerable to local timing attacks in a number of settings discussed below. These functions are used in RSA, making the following operations vulnerable in all configurations: - RSA key generation with any API mbedtlsrsagenkey...

JLSEC-2025-5 Lack of validation for user-provided fields in GitHub.jl

There is a lack of input validation for user-provided values in certain functions. In the GitHub.repo function, the user can provide any string for the reponame field. These inputs are not validated or safely encoded and are sent directly to the server. Impact This means a user can add path...

JLSEC-2026-704 Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in...

Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in wolfSSL could lead to a compromise in the confidentiality of TLS-protected communications via a crafted HelloRetryRequest followed by a ServerHello message that omits the required keyshare extension,...

JLSEC-2026-655 Deno: Permission Bypass via Unicode Normalization Mismatch on macOS (APFS)

Summary Deno's permission system enforces filesystem and execution restrictions by comparing the requested path against the path supplied to --deny-read, --deny-write, --deny-run, or --deny-ffi. On macOS, that comparison was done at the raw-byte level while the APFS filesystem treats different...

JLSEC-2026-622 Predictable WebSocket masking key and handshake nonce in HTTP.jl client

Description The WebSocket client masking key wssendframe! and the Sec-WebSocket-Key handshake nonce wsrandomhandshakekey were generated with randUInt8, n, which draws from the task-local Xoshiro256++ PRNG. Xoshiro is not cryptographically secure: its internal state can be recovered from a short r...

JLSEC-2026-597

An issue was discovered in yasm version 1.3.0. There is a use-after-free in ppgetline in modules/preprocs/nasm/nasm-pp.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-2026-477

zlib before 1.2.12 allows memory corruption when deflating i.e., when compressing if the input has many distant matches...

JLSEC-2026-286

A vulnerability was found in libXpm due to a boundary condition within the XpmCreateXpmImageFromBuffer function. This flaw allows a local attacker to trigger an out-of-bounds read error and read the contents of memory on the system...

JLSEC-2026-248 Issue summary: A timing side-channel which could potentially allow recovering the private key exists...

Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation. Impact summary: A timing side-channel in ECDSA signature computations could allow recovering the private key by an attacker. However, measuring the timing would...

JLSEC-2026-262 Issue summary: When using the low-level OCB API directly with AES-NI or<br>other...

Issue summary: When using the low-level OCB API directly with AES-NI orother hardware-accelerated code paths, inputs whose length is not a multipleof 16 bytes can leave the final partial block unencrypted and unauthenticated.Impact summary: The trailing 1-15 bytes of a message may be exposed...

JLSEC-2026-275

Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denia...

JLSEC-2026-1189 FFmpeg versions from 3.0 up to, but not including, 9.0 contain an uninitialized heap memory read...

FFmpeg versions from 3.0 up to, but not including, 9.0 contain an uninitialized heap memory read vulnerability in the native RSCC decoder libavcodec/rscc.c that allows attackers to disclose heap memory contents by supplying a crafted video file with a compressed tile that decompresses fewer bytes...

JLSEC-2026-966 ImageMagick has infinite loop when writing IPTCTEXT leads to denial of service via crafted profile

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 crafted profile contain invalid IPTC data may cause an infinite loop when writing it with IPTCTEXT. Versions 7.1.2-15 and 6.9.13-40 contain a patch...

JLSEC-2026-778

A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH Secure Shell connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an...

JLSEC-2026-761

iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side channel in RSA decryption operations. This side channel could be sufficient for an attacker to recover credential plaintext. It requires the attacker to send a large number of message...

JLSEC-2026-601

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user...

JLSEC-2026-592

An issue was discovered in yasm version 1.3.0. There is a use-after-free in exprtraversenodespost in libyasm/expr.c...

JLSEC-2026-583 numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an...

numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but never restored. This is related to xsltNumberFormatGetValue, xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal...

JLSEC-2026-553

Lua 5.3.5 has a use-after-free in luaupvaluejoin in lapi.c. For example, a crash outcome might be achieved by an attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships...

JLSEC-2026-554

Lua 5.4.0 fixed in 5.4.1 has a segmentation fault in changedline in ldebug.c e.g., when called by luaGtraceexec because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function...

JLSEC-2026-538

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...

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-2026-539

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-2026-530

A vulnerability was determined in raysan5 raylib up to 909f040. Affected by this vulnerability is the function GenImageFontAtlas of the file src/rtext.c. Executing a manipulation can lead to heap-based buffer overflow. The attack can only be executed locally. The exploit has been publicly disclos...

JLSEC-2026-522

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances...

JLSEC-2026-519

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a norenegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the...

JLSEC-2026-520

A flaw was found in gnutls. A use after free issue in client sending keyshare extension may lead to memory corruption and other consequences...

JLSEC-2026-476

A format string vulnerability in mpv through 0.33.0 allows user-assisted remote attackers to achieve code execution via a crafted m3u playlist file...

JLSEC-2026-419 When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's...

When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's cache entry, making it end sooner or later than otherwise intended. This affects curl using applications that enable HSTS and use URLs with the insecure HTTP:// scheme and perform transfers with host...

JLSEC-2026-291

HDF5 through 1.14.3 contains a stack buffer overflow in H5FLarrmalloc, resulting in the corruption of the instruction pointer and causing denial of service or potential code execution...

JLSEC-2026-295

HDF5 through 1.13.3 and/or 1.14.2 contains a stack buffer overflow in H5HGread, resulting in denial of service or potential code execution...

JLSEC-2026-279 Rclone has Improper Permission and Ownership Handling on Symlink Targets with --links and --metadata

tl;dr: unprivileged user creates a symlink to /etc/sudoers, /etc/shadow or similar and waits for a privileged user or process to copy/backup/mirror users data using --links and --metadata. unprivileged user now owns /etc/sudoers. Summary Insecure handling of symlinks with --links and --metadata i...

JLSEC-2026-217 OpenSSL has internal defaults for a directory tree where it can find a configuration file as well as...

OpenSSL has internal defaults for a directory tree where it can find a configuration file as well as certificates used for verification in TLS. This directory is most commonly referred to as OPENSSLDIR, and is configurable with the --prefix / --openssldir configuration options. For OpenSSL versio...

JLSEC-2026-260 Issue summary: A TLS 1.3 connection using certificate compression can be forced to allocate a large...

Issue summary: A TLS 1.3 connection using certificate compression can be forced to allocate a large buffer before decompression without checking against the configured certificate size limit. Impact summary: An attacker can cause per-connection memory allocations of up to approximately 22 MiB and...

JLSEC-2026-1085 libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the...

libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSHFXPOPEN with SSHFXPSTATUS containin...

JLSEC-2026-718 Heap buffer overflow in DTLS 1.3 ACK message processing

Heap buffer overflow in DTLS 1.3 ACK message processing. A remote attacker can send a crafted DTLS 1.3 ACK message that triggers a heap buffer overflow...