CVE-2026-54741 Lemmy: Blocked users can edit private messages sent before the block

Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-alpha.18, Lemmy blocks new private messages from a sender after the recipient blocks that sender, but the edit path skips the same block check. createprivatemessage checks the recipient's block list with...

CVE-2026-54741

In Lemmy (versions before 0.19.19 and 1.0.0-alpha.18), the edit_private_message function in crates/api/api_crud/src/private_message/update.rs only verifies the caller is the original message creator, skipping the recipient block-list check that create_private_message performs. This allows a block...

EUVD-2026-62843

Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-alpha.18, Lemmy blocks new private messages from a sender after the recipient blocks that sender, but the edit path skips the same block check. createprivatemessage checks the recipient's block list with...

CVE-2026-74571

A flaw was found in the Linux kernel's btrfs filesystem. When mounting a btrfs filesystem with the rescue=ibadroots option after corrupting the block group tree root or raid stripe tree root, the system attempts to update the global block reserve. This process dereferences a missing root pointer,...

CVE-2026-53792

A flaw was found in rsync. A malicious receiver can exploit an out-of-bounds read vulnerability in the sender-side block matching logic. By sending a specially crafted checksum block with a length of zero, an attacker can trigger memory access before the start of an allocated buffer. This can lea...

CVE-2026-74505

A flaw was found in the ALSA 6fire driver within the Linux kernel. During error handling in the probe phase, the driver failed to properly manage a pending USB Request Block URB before freeing associated resources. This oversight could lead to a Use-After-Free UAF vulnerability. A local attacker...

CVE-2026-75916

SiYuan through 3.7.3 contains a cross-site scripting vulnerability in the '' block-reference autocomplete hint popup. In genHintItemHTML app/src/protyle/hint/extend.ts, a candidate block's name, alias, and memo fields are concatenated into the popup's HTML without escaping. An attacker who can se...

CVE-2026-75916 SiYuan XSS-to-RCE via unescaped block metadata in hint popup

SiYuan through 3.7.3 contains a cross-site scripting vulnerability in the '' block-reference autocomplete hint popup. In genHintItemHTML app/src/protyle/hint/extend.ts, a candidate block's name, alias, and memo fields are concatenated into the popup's HTML without escaping. An attacker who can se...

CVE-2026-75916 SiYuan XSS-to-RCE via unescaped block metadata in hint popup

SiYuan through 3.7.3 contains a cross-site scripting vulnerability in the '' block-reference autocomplete hint popup. In genHintItemHTML app/src/protyle/hint/extend.ts, a candidate block's name, alias, and memo fields are concatenated into the popup's HTML without escaping. An attacker who can se...

CVE-2026-75916

In SiYuan through 3.7.3, genHintItemHTML() in app/src/protyle/hint/extend.ts concatenates block name, alias, and memo fields into HTML without escaping, enabling XSS via '((' autocomplete popups. Combined with nodeIntegration enabled, contextIsolation disabled, and no CSP, this escalates to arbit...

EUVD-2026-62441

SiYuan through 3.7.3 contains a cross-site scripting vulnerability in the '' block-reference autocomplete hint popup. In genHintItemHTML app/src/protyle/hint/extend.ts, a candidate block's name, alias, and memo fields are concatenated into the popup's HTML without escaping. An attacker who can se...

CVE-2026-74372

A flaw was found in the Linux kernel's RAID1 subsystem. When a REQATOMIC write operation encounters a bad block, a reference to the RAID device rdev is not properly released. This resource leak prevents the affected RAID device from being removed, potentially leading to a denial of service DoS...

CVE-2026-72141

A flaw was found in the Linux kernel's i2c-imx driver. A malicious device on the I2C bus or a local attacker with access to the I2C bus could exploit this vulnerability by initiating an SMBus block-read operation with a zero byte count. This can cause the I2C bus to become locked, requiring a pow...

CVE-2026-72155

A flaw was found in the Linux kernel's mtd: spi-nor: swp component. When a user attempts to unlock specific blocks on a Serial Peripheral Interface SPI NOR flash device, particularly those at the beginning of the device, the operation may fail. This occurs due to an incorrect calculation of the...

PT-2026-78382

Name of the Vulnerable Software and Affected Versions SiYuan versions prior to 3.7.4 Description A cross-site scripting issue exists in the '' block-reference autocomplete hint popup. The function genHintItemHTML app/src/protyle/hint/extend.ts concatenates a candidate block's name, alias, and mem...

CVE-2026-52736

ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a remote unauthenticated P2P peer can stall a Zebra node by racing an invalid block body against the valid canonical body for the same block header hash. ZIP-244 permits the attacker to mutate coinbase scriptSig authentication data...

CVE-2026-52736

In Zebra versions up to v4.4.1, a remote unauthenticated P2P peer can poison the in-memory non_finalized_block_write_sent_hashes cache by racing an invalid block body sharing a header hash (via ZIP-244 scriptSig malleability). When the valid canonical body arrives, it is treated as a duplicate an...

CVE-2026-52736 ZEBRA: Block suppression via NU5 same-header body poisoning of sent-hash cache

ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a remote unauthenticated P2P peer can stall a Zebra node by racing an invalid block body against the valid canonical body for the same block header hash. ZIP-244 permits the attacker to mutate coinbase scriptSig authentication data...

CVE-2026-52736 ZEBRA: Block suppression via NU5 same-header body poisoning of sent-hash cache

ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a remote unauthenticated P2P peer can stall a Zebra node by racing an invalid block body against the valid canonical body for the same block header hash. ZIP-244 permits the attacker to mutate coinbase scriptSig authentication data...

CVE-2026-52738

Zebra (a Zcash node written in Rust) versions up to v4.4.1 are vulnerable to a persistent chain halt . The finalized-state writer in transparent.rs applies all credits before debits within a block, so a consensus-valid block with a long chain of transparent self-spends to one address can push the...