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  1. [BRL] BRL 386,714.02 [USD] USD 76,697.78 [GBP] GBP 57,066.83 [EUR] EUR 66,096.00
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  2. After Bitcoin Core 0.14.0 and before Bitcoin Core 29.0, validating a specially-crafted block may cause the node to access previously freed memory.
    During validation, necessary data required for checking inputs for each transaction is pre-calculated and cached. For specially crafted invalid blocks, it was possible for this data to be destroyed while it was still being accessed by a background validation thread. An attacker capable of mining a block with sufficient proof-of-work could have exploited this to crash victim nodes. Because of the nature of use-after-free bugs, it is possible that the crash could have been used for remote code execution, though constraints on the input (block) data make this unlikely.
    This issue is considered High severity.

    Details

    By default, script validation for new blocks is dispatched to background threads via a vector of CScriptCheck functors. Each CScriptCheck holds a pointer to a PrecomputedTransactionData object which stores some data needed by each input in the transaction. Because it stores a pointer and not the data itself, care must be taken to ensure that the PrecomputedTransactionData outlives the CScriptCheck.
    The script checks lifetime is enforced by an RAII class, CCheckQueueControl. However, the control is intantiated before the precomputed transaction data. Because local objects in C++ are destructed in reverse order of construction, this means the vector of PrecomputedTransactionData is destroyed before the CCheckQueueControl.
    This is not an issue when the block is valid, as CCheckQueueControl::Wait() will be called before the function returns and the PrecomputedTransactionData gets destroyed. However, in case of an early return (when a separate check fails) a background script thread may read the precomputed transaction data after it was destroyed. An attacker could exploit this to crash victim nodes at the expense of a valid PoW at tip.

    Attribution

    Cory Fields (MIT DCI) discovered this vulnerability and responsibly disclosed it in a detailed report containing a proof of concept for reproduction and a proposed mitigation.

    Timeline

    • 2024-11-02 Cory Fields privately reports the bug
    • 2024-11-06 Pieter Wuille pushes a covert fix to already open PR #31112 which works around the issue by removing the early returns
    • 2024-12-03 PR #31112 is merged
    • 2025-04-12 Bitcoin Core version 29.0 is released with a fix
    • 2026-04-19 The last vulnerable Bitcoin Core version (28.x) goes end of life
    • 2026-05-05 Public disclosure.

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[CVE-2025-70985] [Modified: 30-01-2026] [Analyzed] [V3.1 S9.1:CRITICAL] Incorrect access control in the update function of RuoYi v4.8.2 allows unauthorized attackers to arbitrarily modify data outside of their scope.

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[CVE-2025-52025] [Modified: 11-02-2026] [Analyzed] [V3.1 S9.4:CRITICAL] An SQL Injection vulnerability exists in the GetServiceByRestaurantID endpoint of the Aptsys gemscms POS Platform backend thru 2025-05-28. The vulnerability arises because user input is directly inserted into a dynamic SQL query syntax without proper sanitization or parameterization. This allows an attacker to inject and execute arbitrary SQL code by submitting crafted input in the id parameter, leading to unauthorized data access or modification.

[CVE-2025-52026] [Modified: 12-02-2026] [Analyzed] [V3.1 S7.5:HIGH] An information disclosure vulnerability exists in the /srvs/membersrv/getCashiers endpoint of the Aptsys gemscms backend platform thru 2025-05-28. This unauthenticated endpoint returns a list of cashier accounts, including names, email addresses, usernames, and passwords hashed using MD5. As MD5 is a broken cryptographic function, the hashes can be easily reversed using public tools, exposing user credentials in plaintext. This allows remote attackers to perform unauthorized logins and potentially gain access to sensitive POS operations or backend functions.

[CVE-2026-1386] [Modified: 30-01-2026] [Analyzed] [V3.1 S6.0:MEDIUM] A UNIX symbolic link following issue in the jailer component in Firecracker version v1.13.1 and earlier and 1.14.0 on Linux may allow a local host user with write access to the pre-created jailer directories to overwrite arbitrary host files via a symlink attack during the initialization copy at jailer startup, if the jailer is executed with root privileges. To mitigate this issue, users should upgrade to version v1.13.2 or 1.14.1 or above.

[CVE-2025-70457] [Modified: 30-01-2026] [Analyzed] [V3.1 S9.8:CRITICAL] A Remote Code Execution (RCE) vulnerability exists in Sourcecodester Modern Image Gallery App v1.0 within the gallery/upload.php component. The application fails to properly validate uploaded file contents. Additionally, the application preserves the user-supplied file extension during the save process. This allows an unauthenticated attacker to upload arbitrary PHP code by spoofing the MIME type as an image, leading to full system compromise.

[CVE-2025-70458] [Modified: 30-01-2026] [Analyzed] [V3.1 S5.4:MEDIUM] A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the DomainCheckerApp class within domain/script.js of Sourcecodester Domain Availability Checker v1.0. The vulnerability occurs because the application improperly handles user-supplied data in the createResultElement method by using the unsafe innerHTML property to render domain search results.

[CVE-2026-24127] [Modified: 02-02-2026] [Analyzed] [V3.1 S5.4:MEDIUM] Typemill is a flat-file, Markdown-based CMS designed for informational documentation websites. A reflected Cross-Site Scripting (XSS) exists in the login error view template `login.twig` of versions 2.19.1 and below. The `username` value can be echoed back without proper contextual encoding when authentication fails. An attacker can execute script in the login page context. This issue has been fixed in version 2.19.2.

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