EUVD-2026-38880

In the Linux kernel, the following vulnerability has been resolved: nexthop: fix IPv6 route referencing IPv4 nexthop syzbot reported a panic 1 2. When an IPv6 nexthop is replaced with an IPv4 nexthop, the hasv4 flag of all groups containing this nexthop is not updated. This is because...

CVE-2026-53944

Affected software: Ghost CMS (Node.js) versions 6.0.9 through 6.21.1. Vulnerability: When Ghost makes an external request, an IPv6 literal can map to a private IPv4 address, bypassing the internal IP filter and potentially reaching internal services. Root cause: IP-filter bypass via IPv6-to-IPv4 ...

kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err()

A flaw was found in the Linux kernel's IPv6 tunnel implementation. A remote attacker could exploit this flaw by sending malicious ICMPv6 error messages to cause a stack-based buffer overflow in the kernel's IPv4-over-IPv6 tunnel error handling code. This could result in a kernel crash denial of...

CVE-2026-56266

CVE-2026-56266 affects Crawl4AI prior to 0.8.7. The vulnerability is a server-side request forgery in the /crawl, /crawl/stream, /md, and /llm endpoints that fetch arbitrary user‑supplied URLs without validation. Unauthenticated attackers can bypass the internal-address blocklist using IPv6‑mappe...

Astra Linux – Vulnerability in Linux

In the Linux kernel before version 5.11.14, there is a use-after-free issue in the cipsov4genopt module, located in net/ipv4/cipsoipv4.c. This issue arises due to improper handling of the CIPSO and CALIPSO reference counts related to DOI definitions. As a result, an arbitrary value is written to...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftct: sanitize layer 3 and 4 protocol numbers in custom expectations - Disallow families other than NFPROTOIPV4,IPV6,INET. - Disallow layer 4 protocols without ports, as the destination port is a mandatory attribut...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net: ipv4: fixed a issue where deleting routes with a nexthop object triggered a warning. The FRR team encountered a kernel warning1 while deleting routes2. This issue occurred when attempting to delete a route that pointed to...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/ip6tunnel: Prevents perpetual tunnel growth. Similar to the ipv4tunnel case, the ipv6 version also updates dev-neededheadroom. While the growth of tunnel headroom adjustment in commit 5ae1e9922bbd “net: iptunnel: prevent...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipvs: fixed the NULL pointer dereference in the route error path of ipv4 null-ptr-deref. The IPv4 code path in ipvsgetoutrt calls dstlinkfailure, without ensuring that skb-dev is set. This leads to a NULL pointer dereference in...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: net: vxlan: Prevent NULL dereferencing in vxlanxmitone. Neither sock4 nor sock6 pointers are guaranteed to be non-NULL in vxlanxmitone, especially if the iface is disabled. This can lead to the following NULL dereferences: -...

Crawl4AI: SSRF filter bypass in Docker server via IPv6 transition forms (NAT64 / 6to4 / unspecified / v4-mapped)

Summary The Docker API server's SSRF protection validatewebhookurl / validateurldestination in deploy/docker/utils.py used an explicit IPv4/IPv6 CIDR blocklist that missed several address families. An attacker could reach internal services and cloud metadata endpoints e.g. 169.254.169.254 despite...

CVE-2026-47684

Sync-in Server is a secure, open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.3.0, the private IP blocklist regex used in the URL download feature does not match IPv4-mapped IPv6 addresses e.g. ::ffff:127.0.0.1, allowing SSRF protection to be bypassed ...

CVE-2026-10639

In Zephyr's native IPv4 stack, icmpv4handleechorequest in subsys/net/ip/icmpv4.c builds an echo-reply packet reply, hands it to nettrysenddata, and then, on success, calls netstatsupdateicmpsentnetpktifacereply. nettrysenddata transfers ownership of reply to the TX path netiftryqueuetx - netiftx ...

CVE-2026-47684

CVE-2026-47684 — Sync-in Server SSRF bypass (IPv4-mapped IPv6 addresses) Affected product: Sync-in Server (file storage/sharing/collaboration). Vulnerability: The private IP blocklist regex (regExpPrivateIP) used in the URL download feature does not match IPv4-mapped IPv6 addresses (e.g., ::ffff:...

CVE-2026-10639

Summary: Zephyr’s native IPv4 icmpv4_handle_echo_request() can perform a use-after-free when updating per-interface statistics after sending an ICMP echo reply. The code hands the echo-reply to the TX path, which may drop the packet and free the net_pkt before the post-send stats update runs. As ...

PT-2026-50129

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. In versions 1.56.0 through 1.101.0, 2.0.0b1, and 2.0.0b2, the cloud-metadata blocklist could be bypassed by encoding the metadata IP in an IPv6 transition form that the previous fix, CVE-2026-46678...

PT-2026-50165

Name of the Vulnerable Software and Affected Versions Crawl4AI versions prior to 0.8.8 Description The Docker API server contains a Server-Side Request Forgery SSRF flaw where the protection mechanisms in the validate webhook url and validate url destination functions used an incomplete IPv4/IPv6...

GHSA-38CX-CQ6F-5755 Symfony: IpUtils::PRIVATE_SUBNETS Omits IPv6 Transition Forms (6to4, NAT64, Teredo, IPv4-compatible): SSRF Bypass in NoPrivateNetworkHttpClient

Description Symfony\Component\HttpClient\NoPrivateNetworkHttpClient is documented as a decorator that blocks requests to private networks by default. The list of blocked subnets Symfony\Component\HttpFoundation\IpUtils::PRIVATESUBNETS on 6.4+, a private constant in NoPrivateNetworkHttpClient on 5...

PT-2026-49337

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could...

kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()

A flaw was found in the Linux kernel's IPv6 ICMP error generation. A remote attacker could send a specially crafted IPv4 ICMP error packet with a Common Internet Protocol Security Option CIPSO IP option. This could lead to incorrect handling of packet control block data when generating an IPv6 IC...