330 matches found
CVE-2026-64114 ipv4: raw: reject IP_HDRINCL packets with ihl < 5
In the Linux kernel, the following vulnerability has been resolved: ipv4: raw: reject IPHDRINCL packets with ihl ihl 4; err = -EINVAL; if iphlen length goto errorfree; if iphlen = sizeofiph / fix up saddr, totlen, id, csum, transportheader / It does not, however, reject ihl = sizeofiph" branch is...
CVE-2026-63994 tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]()
In the Linux kernel, the following vulnerability has been resolved: tunnels: load network headers after skbcow in iptunnelpmtudbuildicmpv6 Sashiko found that iptunnelpmtudbuildicmp and iptunnelpmtudbuildicmpv6 were caching iphdr and ipv6hdr before an skbcow call which can reallocate skb-head. Fix...
CVE-2026-63993 vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()
In the Linux kernel, the following vulnerability has been resolved: vxlan: do not reuse cached iphdr value after skbtunnelcheckpmtu skbtunnelcheckpmtu can change skb-head. Reusing oldiph afer skbtunnelcheckpmtu can cause an UAF. Use instead iphdrskb as done in drivers/net/bareudp.c and...
CVE-2026-63994 tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]()
In the Linux kernel, the following vulnerability has been resolved: tunnels: load network headers after skbcow in iptunnelpmtudbuildicmpv6 Sashiko found that iptunnelpmtudbuildicmp and iptunnelpmtudbuildicmpv6 were caching iphdr and ipv6hdr before an skbcow call which can reallocate skb-head. Fix...
EUVD-2026-45566
In the Linux kernel, the following vulnerability has been resolved: vxlan: do not reuse cached iphdr value after skbtunnelcheckpmtu skbtunnelcheckpmtu can change skb-head. Reusing oldiph afer skbtunnelcheckpmtu can cause an UAF. Use instead iphdrskb as done in drivers/net/bareudp.c and...
CVE-2026-63993
CVE-2026-63993 corresponds to a Linux kernel issue in VXLAN handling: skb_tunnel_check_pmtu() may modify skb->head, causing a stale ip_hdr() reference to be reused and potentially leading to use-after-free (UAF). The advised remediation is to use ip_hdr(skb) instead of the cached value, as imp...
PT-2026-61310
Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Use-After-Free UAF issue exists in the vxlan component. The problem occurs when a cached ip hdr value is reused after the skb tunnel check pmtu function is called, as this function can...
EUVD-2026-44817
Wekan is open source kanban built with Meteor. Prior to 9.46, header-login with HEADERLOGINTRUSTEDIPS uses getRequestIp in server/lib/headerLoginAuth.js to trust the client-supplied X-Forwarded-For header before the real socket address, allowing an unauthenticated attacker to send HEADERLOGINID f...
CVE-2026-58488 HedgeDoc: Rate-limit bypass via CF-Connecting-IP header spoofing
HedgeDoc is an open source, real-time, collaborative, markdown notes application. Versions prior to 1.11.0 allowed attackers to circumvent the rate-limiting of the /login and /register routes by spoofing IP addresses. HedgeDoc instances checked for CloudFlare's cf-connecting-ip header and used th...
CVE-2026-58488
HedgeDoc is an open source, real-time, collaborative, markdown notes application. Versions prior to 1.11.0 allowed attackers to circumvent the rate-limiting of the /login and /register routes by spoofing IP addresses. HedgeDoc instances checked for CloudFlare's cf-connecting-ip header and used th...
EUVD-2026-43549
HedgeDoc is an open source, real-time, collaborative, markdown notes application. Versions prior to 1.11.0 allowed attackers to circumvent the rate-limiting of the /login and /register routes by spoofing IP addresses. HedgeDoc instances checked for CloudFlare's cf-connecting-ip header and used th...
CVE-2026-58488
CVE-2026-58488 affects HedgeDoc versions prior to 1.11.0. The vulnerability arises from the login/register rate-limit logic which, when a cf-connecting-ip header is present, uses that header instead of the user’s real IP—even if requests did not originate from Cloudflare. This allowed an attacker...
CVE-2026-58488 HedgeDoc: Rate-limit bypass via CF-Connecting-IP header spoofing
HedgeDoc is an open source, real-time, collaborative, markdown notes application. Versions prior to 1.11.0 allowed attackers to circumvent the rate-limiting of the /login and /register routes by spoofing IP addresses. HedgeDoc instances checked for CloudFlare's cf-connecting-ip header and used th...
CVE-2026-54003 Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header
Kirby is an open-source content management system. Prior to 4.9.4 and from 5.4.4, Kirby sites with no configured user accounts that run on publicly accessible servers behind a reverse proxy setting the Forwarded, X-Client-IP, or X-Real-IP request header could allow remote attackers to install the...
EUVD-2026-42351
Fiber is an Express inspired web framework written in Go. Prior to 3.3.0 and 2.52.14, the BalancerForward proxy helper in middleware/proxy/proxy.go uses Header.Add instead of Header.Set when injecting X-Real-IP, allowing an attacker-supplied first X-Real-IP value to be forwarded to upstream serve...
CVE-2026-45045 Fiber: X-Real-IP Spoofing via Header.Add() in BalancerForward
Fiber is an Express inspired web framework written in Go. Prior to 3.3.0 and 2.52.14, the BalancerForward proxy helper in middleware/proxy/proxy.go uses Header.Add instead of Header.Set when injecting X-Real-IP, allowing an attacker-supplied first X-Real-IP value to be forwarded to upstream serve...
User Impersonation
Overview Affected versions of this package are vulnerable to User Impersonation via the BalancerForward process. An attacker can manipulate upstream IP-based logic, such as rate limiting, access control, and audit logging, by injecting a spoofed X-Real-IP header value in requests. Remediation...
GoFiber Vulnerable to X-Real-IP Spoofing via Header.Add() in BalancerForward
Summary The BalancerForward proxy helper in GoFiber uses Header.Add instead of Header.Set when injecting the X-Real-IP header. This appends the real client IP as a second header value rather than replacing any attacker-supplied value. Upstream servers that read the first X-Real-IP header nginx,...
GHSA-GCFQ-8GQF-4876 GoFiber Vulnerable to X-Real-IP Spoofing via Header.Add() in BalancerForward
Summary The BalancerForward proxy helper in GoFiber uses Header.Add instead of Header.Set when injecting the X-Real-IP header. This appends the real client IP as a second header value rather than replacing any attacker-supplied value. Upstream servers that read the first X-Real-IP header nginx,...
