openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()

A flaw was found in OpenSSL. When processing a specially crafted PKCS7 or S/MIME Secure/Multipurpose Internet Mail Extensions signed message, a heap use-after-free vulnerability in the PKCS7verify function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an emp...

ThreatsDay: Android Spyware, PLC Attacks, AI Image Prompt Injection + 12 More Stories

Most of this week's trouble came dressed as something useful. A package stole data. A fake extension opened remote access. A safety app became spyware. An image gave hidden orders to an AI agent. Other threats hid in open systems, weak code, and normal network traffic. The threats change every...

PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion

Summary PhpSpreadsheet's OLE reader follows sector chains from attacker-controlled XLS/OLE metadata without detecting cycles or enforcing a maximum chain length. A tiny malformed .xls/OLE file can set the small-block depot sector chain to point back to itself. During normal XLS detection,...

GHSA-XH5M-36R6-47M3 PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion

Summary PhpSpreadsheet's OLE reader follows sector chains from attacker-controlled XLS/OLE metadata without detecting cycles or enforcing a maximum chain length. A tiny malformed .xls/OLE file can set the small-block depot sector chain to point back to itself. During normal XLS detection,...

PHPSpreadsheet: Gnumeric reader unbounded gzip expansion causes memory exhaustion

Summary PhpSpreadsheet's Gnumeric reader reads attacker-supplied .gnumeric files into memory and, when the file starts with gzip magic bytes, calls gzdecode on the full compressed contents without enforcing a decompressed-size limit. A very small compressed .gnumeric file can expand to data large...

GHSA-2MRG-GJXQ-2GVR PHPSpreadsheet: Gnumeric reader unbounded gzip expansion causes memory exhaustion

Summary PhpSpreadsheet's Gnumeric reader reads attacker-supplied .gnumeric files into memory and, when the file starts with gzip magic bytes, calls gzdecode on the full compressed contents without enforcing a decompressed-size limit. A very small compressed .gnumeric file can expand to data large...

Email threat landscape: Q2 2026 trends and insights

In this article 1. Tycoon2FA Q2 disruption impact 2. QR code phishing attacks 3. CAPTCHA-gated phishing tactics 4. Malicious payloads 5. Business email compromise 6. Microsoft Teams threats 7. Notable phishing campaigns 8. Mitigation and protection guidance 9. Indicators of compromise IOCs The...

PHPSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist

Summary The domain whitelist introduced in PhpSpreadsheet 5.4.0 for the WEBSERVICE formula function can be bypassed via HTTP redirect. The whitelist validates only the initial URL's hostname, but filegetcontents follows 302/301 redirects by default without re-validating the redirect target agains...

GHSA-6HQ5-7373-42RG PHPSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist

Summary The domain whitelist introduced in PhpSpreadsheet 5.4.0 for the WEBSERVICE formula function can be bypassed via HTTP redirect. The whitelist validates only the initial URL's hostname, but filegetcontents follows 302/301 redirects by default without re-validating the redirect target agains...

[SECURITY] [DSA 6398-1] webkit2gtk security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6398-1 [email protected] https://www.debian.org/security/ Alberto Garcia July 23, 2026 https://www.debian.org/security/faq -...

JLSEC-2026-782

A flaw was found in libssh. A remote attacker, by controlling client configuration files or knownhosts files, could craft specific hostnames that when processed by the matchpattern function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion,...

JLSEC-2026-784

A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftpextensionsgetname/sftpextensionsgetdata of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may ...

Auth.js: getToken() throws an uncaught exception on malformed Bearer authorization headers

Summary The exported getToken helper next-auth/jwt and @auth/core/jwt can throw an uncaught exception when it reads a malformed Authorization: Bearer … header. When no session cookie is present, getToken URL-decodes the bearer value before validating it, and malformed percent-encoding causes the...

GHSA-XMF8-CVQR-RFGJ Auth.js: getToken() throws an uncaught exception on malformed Bearer authorization headers

Summary The exported getToken helper next-auth/jwt and @auth/core/jwt can throw an uncaught exception when it reads a malformed Authorization: Bearer … header. When no session cookie is present, getToken URL-decodes the bearer value before validating it, and malformed percent-encoding causes the...

Auth.js: Email normalizer validates the address before Unicode normalization, allowing a homoglyph @ bypass

Summary The default email-address normalizer used by the email/magic-link sign-in flow validates the address before applying Unicode normalization. An address can contain a Unicode character that is not an ASCII @ U+0040 but canonicalizes to one under NFKC/NFKD normalization the normalization...

GHSA-7RQJ-J65F-68WH Auth.js: Email normalizer validates the address before Unicode normalization, allowing a homoglyph @ bypass

Summary The default email-address normalizer used by the email/magic-link sign-in flow validates the address before applying Unicode normalization. An address can contain a Unicode character that is not an ASCII @ U+0040 but canonicalizes to one under NFKC/NFKD normalization the normalization...

openssl: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing

A flaw was found in OpenSSL. A remote attacker could exploit this vulnerability by sending a specially crafted Cryptographic Message Syntax CMS EnvelopedData message. During the processing of a KeyTransportRecipientInfo with RSA-OAEP encryption, the system attempts to access an optional parameter...

Auth.js: OAuth state, nonce, and PKCE check cookies are not bound to the provider that created them

Summary Auth.js stores the OAuth/OIDC anti-CSRF checks state, nonce, and the PKCE verifier in global cookies that are not bound to the provider that created them. On callback, a check value minted during a sign-in started with one provider can satisfy the callback for a different provider, becaus...

GHSA-X445-F3H2-J279 Auth.js: OAuth state, nonce, and PKCE check cookies are not bound to the provider that created them

Summary Auth.js stores the OAuth/OIDC anti-CSRF checks state, nonce, and the PKCE verifier in global cookies that are not bound to the provider that created them. On callback, a check value minted during a sign-in started with one provider can satisfy the callback for a different provider, becaus...

USN-8598-1: rsyslog vulnerabilities

It was discovered that rsyslog incorrectly handled regex-based TCP framing in the imptcp module. A remote attacker could possibly use this issue to cause rsyslog to crash, resulting in a denial of service. It was discovered that rsyslog incorrectly handled oversized RFC5424 structured data in the...