JLSEC-2026-655 Deno: Permission Bypass via Unicode Normalization Mismatch on macOS (APFS)

Summary Deno's permission system enforces filesystem and execution restrictions by comparing the requested path against the path supplied to --deny-read, --deny-write, --deny-run, or --deny-ffi. On macOS, that comparison was done at the raw-byte level while the APFS filesystem treats different...

Arbitrary HTML present after sanitization because of unicode normalization

ImpactIf using keeptypographicwhitespace=False which is the default, the sanitizer normalizes unicode to the NFKC form at the end. Some unicode characters normalize to chevrons; this allows specially crafted HTML to escape sanitization. PatchesThe problem has been fixed in 2.4.2. WorkaroundsSet...

PYSEC-2026-1455 Arbitrary HTML present after sanitization because of unicode normalization

Impact If using keeptypographicwhitespace=False which is the default, the sanitizer normalizes unicode to the NFKC form at the end. Some unicode characters normalize to chevrons; this allows specially crafted HTML to escape sanitization. Patches The problem has been fixed in 2.4.2. Workarounds Se...

PYSEC-2026-1840 Pyramid static view path traversal up one directory

Impact This impacts users of Python 3.11 that are using a Pyramid static view with a full filesystem path and have a index.html file that is located exactly one directory above the location of the static view's file system path. No further path traversal exists, and the only file that could be...

CVE-2026-14940: Heap-based Buffer Overflow

A heap-buffer-overflow flaw was found in 389 Directory Server 389-ds-base. When normalizing a Distinguished Name DN that contains a legacy-quoted value encoding a multivalued nested Relative Distinguished Name RDN, the server can write past the end of a heap allocation while sorting RDN...

Medium: python3.9

Issue Overview: The "tarfile" module would still apply normalization of AREGTYPE \x00 blocks to DIRTYPE, even while processing a multi-block member such as GNUTYPELONGNAME or GNUTYPELONGLINK. This could result in a crafted tar archive being misinterpreted by the tarfile module compared to other...

Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : Python vulnerabilities (USN-8509-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8509-1 advisory. It was discovered that Python incorrectly normalized paths in the tarfile module. An attacker could possibly use this issue to...

Important: python3.14

Issue Overview: tarfile.extractall with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the...

PT-2026-56194

Name of the Vulnerable Software and Affected Versions 389 Directory Server 389-ds-base affected versions not specified Description A heap-buffer-overflow occurs during the normalization of a Distinguished Name DN containing a legacy-quoted value that encodes a multivalued nested Relative...

Linux Distros Unpatched Vulnerability : CVE-2026-14940

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A heap-buffer-overflow flaw was found in 389 Directory Server 389-ds-base. When normalizing a Distinguished Name DN that contains a legacy-quoted value encoding...

USN-8509-1 python3.10, python3.12, python3.14 vulnerabilities

It was discovered that Python incorrectly normalized paths in the tarfile module. An attacker could possibly use this issue to bypass path restrictions. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. CVE-2025-13462 It was discovered that Python's HTMLParser incorrectly handled...

Security Bulletin: Multiple Vulnerabilities affect IBM Tivoli Netcool Impact 7.1.1.0

Summary Multiple vulnerabilities were addressed in IBM Tivoli Netcool Impact version 7.1.1.1 Vulnerability Details CVEID:CVE-2026-42198 DESCRIPTION: pgjdbc is an open source postgresql JDBC Driver. From version 42.2.0 to before version 42.7.11, pgjdbc is vulnerable to a client-side denial of...

GHSA-PVRJ-8CG3-J5F8 auth-fetch-mcp has SSRF Protection Bypass via IPv4-mapped IPv6 Loopback

SSRF Protection Bypass via IPv4-mapped IPv6 Loopback Summary auth-fetch-mcp v3.0.1 implements SSRF protection in assertSafeUrl src/security.ts to block requests to private and loopback addresses. However, the isPrivateV6 function fails to detect IPv4-mapped IPv6 loopback addresses in their...

auth-fetch-mcp has SSRF Protection Bypass via IPv4-mapped IPv6 Loopback

SSRF Protection Bypass via IPv4-mapped IPv6 Loopback Summary auth-fetch-mcp v3.0.1 implements SSRF protection in assertSafeUrl src/security.ts to block requests to private and loopback addresses. However, the isPrivateV6 function fails to detect IPv4-mapped IPv6 loopback addresses in their...

Uncaught Exception

Overview @fastify/middie is a Middleware engine for Fastify Affected versions of this package are vulnerable to Uncaught Exception in the URL normalization process when handling malformed percent-encoded sequences in incoming request paths. An attacker can cause the Node.js process to terminate...

CVE-2026-53540

A flaw was found in python-multipart where parseform did not validate the Content-Length header before using it to bound its chunked read of the request body. A negative Content-Length turns the bounded read into a read-until-EOF, loading the entire body into memory in a single operation instead ...

PT-2026-55211

Name of the Vulnerable Software and Affected Versions auth-fetch-mcp versions prior to 3.0.1 Description A Server-Side Request Forgery SSRF issue exists due to improper validation of IPv4-mapped IPv6 addresses. The isPrivateV6 function in src/security.ts, which is called by assertSafeUrl, fails t...

GHSA-X7QQ-M748-8P2C Probo has an open redirect bypass via path normalization

Impact Probo's saferedirect package validates redirect URLs used across authentication flows OIDC, SAML, session transfer, OAuth connectors, and trust-center magic links. The validator only inspected the second character of relative paths, so a URL like /../\evil.com passed validation because the...

Probo has an open redirect bypass via path normalization

Impact Probo's saferedirect package validates redirect URLs used across authentication flows OIDC, SAML, session transfer, OAuth connectors, and trust-center magic links. The validator only inspected the second character of relative paths, so a URL like /../\evil.com passed validation because the...

PT-2026-54444

Name of the Vulnerable Software and Affected Versions probod versions prior to 0.194.1 Description The saferedirect package in go.probo.inc/probo fails to properly validate redirect URLs used in authentication flows, such as OIDC, SAML, session transfer, OAuth connectors, and trust-center magic...