CVE-2026-62291

A flaw was found in libheif, a library for decoding and encoding HEIF and AVIF image formats. A remote attacker could exploit this vulnerability by providing a specially crafted image sequence with mismatched auxiliary alpha dimensions. During the image processing workflow, this could lead to...

UBUNTU-CVE-2026-63495

Libevent is an event notification library. From 2.2.0-alpha-dev until...

UBUNTU-CVE-2026-63380

Libevent is an event notification library. Prior to 2.2.2-alpha, libev...

CVE-2026-63384 Libevent: `evtag_unmarshal_header()` decodes a wire `uint32` length into a signed `int` return value.

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an incorrect integer conversion in eventtagging.c when evtagunmarshalheader uses evtagdecodeint to decode an attacker-controlled uint32 payload length and returns it as a signed int. Values above INTMAX becom...

CVE-2026-63384 Libevent: `evtag_unmarshal_header()` decodes a wire `uint32` length into a signed `int` return value.

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an incorrect integer conversion in eventtagging.c when evtagunmarshalheader uses evtagdecodeint to decode an attacker-controlled uint32 payload length and returns it as a signed int. Values above INTMAX becom...

CVE-2026-63384 Libevent: `evtag_unmarshal_header()` decodes a wire `uint32` length into a signed `int` return value.

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an incorrect integer conversion in eventtagging.c when evtagunmarshalheader uses evtagdecodeint to decode an attacker-controlled uint32 payload length and returns it as a signed int. Values above INTMAX becom...

CVE-2026-63380 Libevent: Null Pointer Dereference in `evws_new_session`

Libevent is an event notification library. Prior to 2.2.2-alpha, libevent can dereference invalid list pointers in ws.c when evwsnewsession enters its error path after evhttpstartws succeeds but buffereventenablelocking fails. evwsconnectionfree sees a non-null httpserver and unconditionally call...

Linux Distros Unpatched Vulnerability : CVE-2026-62291

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted image sequence with a 2x2 primary plane and a 256x256 auxiliary alp...

PT-2026-78675

Name of the Vulnerable Software and Affected Versions Lemmy versions prior to 0.19.19 Lemmy versions prior to 1.0.0-alpha.18 Description A lower-ranked remote moderator can remove a higher-ranked moderator by sending a signed ActivityPub Remove activity to the target instance. While the local API...

DEBIAN-CVE-2026-62291

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted image sequence with a 2x2 primary plane and a 256x256 auxiliary alpha plane can cause attacker-controlled heap corruption during a normal decode and re-encode workflow. TrackVisual::decodenextimagesample...

CVE-2026-62291 libheif: Heap out of bounds write in libheif uncompressed encoder when writing images with mismatched auxiliary alpha dimensions

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted image sequence with a 2x2 primary plane and a 256x256 auxiliary alpha plane can cause attacker-controlled heap corruption during a normal decode and re-encode workflow. TrackVisual::decodenextimagesample...

CVE-2026-62291

libheif ≤1.23.0 allows attacker-controlled heap corruption (OOB write/read) via mismatched alpha plane dimensions during decode-and-re-encode. Fixed in 1.23.1; SUSE, openSUSE, and PT Security have issued updates. Exploitation in the wild is not reported. Patch: https://github.com/strukturag/libhe...

CVE-2026-62291 libheif: Heap out of bounds write in libheif uncompressed encoder when writing images with mismatched auxiliary alpha dimensions

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted image sequence with a 2x2 primary plane and a 256x256 auxiliary alpha plane can cause attacker-controlled heap corruption during a normal decode and re-encode workflow. TrackVisual::decodenextimagesample...

EUVD-2026-57451

SiYuan v3.7.4-alpha.1 a pre-release; the endpoint does not exist in stable v3.7.3 or earlier contains an information disclosure vulnerability in the /api/av/getAttributeViewFieldViews endpoint. The route is registered with CheckAuth only and applies no publish-access filtering, so reader-role...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: alpha: Fixed corruption in user-space during memory compaction. Alpha systems may experience sporadic crashes in user-space and heap corruption when memory compaction is enabled. Symptoms include SIGSEGV signals, failures by t...

Astra Linux – Vulnerability in Capstone

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and earlier, a unchecked return from vsnprintf in SStreamconcat allowed a malicious csoptmem.vsnprintf to manipulate SStream’s index beyond its limit, resulting in a stack buffer underflow/overflow when the next write operation occurre...

CVE-2026-19376

A vulnerability has been found in Uasoft Badaso 3.0.0-alpha. This vulnerability affects the function ApiRequest::class of the file src/Routes/api.php of the component File API. The manipulation leads to permission issues. It is possible to initiate the attack remotely. The exploit has been...

CVE-2026-71556 go-git: Worktree operations may follow symlinks

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, worktree operations including checkout, status, and add resolve symbolic links inside the working tree without confining resolution to the worktree boundary, so a maliciously crafted reposito...

PT-2026-76579

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has a use-after-free in buffer.c when evbuffer add buffer reference processes an output buffer whose out total len is zero. evbuffer free all chains frees the initial empty chain without resetting outbuf-first,...

PT-2026-76581

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in event tagging.c when decode tag internal requests at most five bytes from evbuffer pullup but iterates using the full logical buffer length. A fragmented evbuffer...