CVE-2026-5673 Libtheora: libtheora: denial of service or information disclosure via malformed avi file processing

A flaw was found in libtheora. This heap-based out-of-bounds read vulnerability exists within the AVI Audio Video Interleave parser, specifically in the aviparseinputfile function. A local attacker could exploit this by tricking a user into opening a specially crafted AVI file containing a...

PT-2026-30723

SymCrypt is the core cryptographic function library currently used by Windows. From 103.5.0 to before 103.11.0, The SymCryptXmssSign function passes a 64-bit leaf count value to a helper function that accepts a 32-bit parameter. For XMSS^MT parameter sets with total tree height = 32 which include...

Microsoft Windows SymCrypt 安全漏洞

Microsoft Windows SymCrypt is the core encryption function library currently used in Windows by Microsoft. Versions of Microsoft Windows SymCrypt from 103.5.0 to 103.11.0 contained security vulnerabilities. These vulnerabilities stemmed from issues with the SymCryptXmssSign function, where...

PT-2026-30724

Name of the Vulnerable Software and Affected Versions Discount versions 1.3.1.1 through 2.2.7.3 Description A signed length truncation bug causes an out-of-bounds read in the default Markdown parse path. Inputs larger than INT MAX are truncated to a signed int before entering the native parser,...

discount 缓冲区错误漏洞

Discount is a Markdown language parsing and conversion tool developed by Orc developers. Versions of Discount from 1.3.1.1 to 2.2.7.4 contained a buffer error vulnerability. This vulnerability stemmed from a signed length truncation error, which could lead to out-of-bounds reads and process crash...

SUSE CVE-2026-34610

The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lcx509extractnamesegment casts sizet vlen to uint8t when storing the Common Name CN length. An attacker who crafts a certificate with CN = victim's CN +...

CVE-2026-23457

A flaw was found in the Linux kernel's netfilter subsystem, specifically within the nfconntracksip module. This vulnerability arises from an integer truncation error when processing the Content-Length header in Session Initiation Protocol SIP messages. On 64-bit systems, large Content-Length valu...

EUVD-2026-18768

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate L2CAPINFORSP payload length before access l2capinformationrsp checks that cmdlen covers the fixed l2capinforsp header type + result, 4 bytes but then reads rsp-data without verifying that the payload is...

CVE-2026-23457

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntracksip: fix Content-Length u32 truncation in siphelptcp siphelptcp parses the SIP Content-Length header with simplestrtoul, which returns unsigned long, but stores the result in unsigned int clen. On 64-bit...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from integer truncation in the siphelptcp function, potentially leading to parsing errors...

CVE-2026-34610

The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lcx509extractnamesegment casts sizet vlen to uint8t when storing the Common Name CN length. An attacker who crafts a certificate with CN = victim's CN +...

CVE-2026-34610 leancrypto: Integer truncation in X.509 name parser enables certificate identity impersonation

The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lcx509extractnamesegment casts sizet vlen to uint8t when storing the Common Name CN length. An attacker who crafts a certificate with CN = victim's CN +...

CVE-2026-34610

The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lcx509extractnamesegment casts sizet vlen to uint8t when storing the Common Name CN length. An attacker who crafts a certificate with CN = victim's CN +...

CVE-2026-34610 leancrypto: Integer truncation in X.509 name parser enables certificate identity impersonation

The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lcx509extractnamesegment casts sizet vlen to uint8t when storing the Common Name CN length. An attacker who crafts a certificate with CN = victim's CN +...

CVE-2026-34610

The CVE affects leancrypto's PQC-focused crypto library. Before 1.7.1, lc_x509_extract_name_segment() truncates size_t vlen to uint8_t for CN length, allowing an attacker to craft a certificate whose CN impersonates the victim’s CN during PKCS#7 verification, certificate chain matching, and code ...

CVE-2026-34610 leancrypto: Integer truncation in X.509 name parser enables certificate identity impersonation

The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lcx509extractnamesegment casts sizet vlen to uint8t when storing the Common Name CN length. An attacker who crafts a certificate with CN = victim's CN +...

Security Bulletin: IBM Content Navigator is affect my Apache Xalan

Summary IBM Content Navigator is affected by CVE-2022-34169, a remote code execution vulnerability CWE-681 in the Apache Xalan Java XSLT library. An integer truncation flaw in the processing of XSLT stylesheets allows a remote attacker to supply a specially crafted stylesheet and execute arbitrar...

ANT-2026-P23DVQM2 · wolfSSL · crypto-failure

crypto-failure high CVE-2026-5500 Severity Claude high · Security research firm high · Maintainer - Discovered by Claude Mythos Preview SECURITY RESEARCH FIRM ANALYSIS Triage and disclosure were performed by Calif. Verdict: true positive Severity: high TIMELINE Dates from discovery through public...

python-ecdsa: Denial of Service via improper DER length validation in crafted private keys

Summary An issue in the low-level DER parsing functions can cause unexpected exceptions to be raised from the public API functions. 1. ecdsa.der.removeoctetstring accepts truncated DER where the encoded length exceeds the available buffer. For example, an OCTET STRING that declares a length of 40...

Django: Django: Denial of Service via crafted HTML inputs

A flaw was found in Django. A remote attacker can exploit this vulnerability by providing crafted inputs containing a large number of unmatched HTML end tags to the django.utils.text.Truncator.chars and Truncator.words methods when html=True, or through the truncatecharshtml and truncatewordshtml...