EUVD-2026-39508

File Browser: Authentication Bypass via Proxy Auth Header Forgery...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 24.04 LTS / 26.04 LTS : curl vulnerabilities (USN-8525-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8525-1 advisory. Harry Sintonen discovered that curl incorrectly handled credentials when following HTTP...

CVE-2026-8927

A flaw was found in libcurl. When reusing a libcurl handle for sequential transfers with environment-variable proxy configuration, the library does not properly clear the proxy authentication state. This oversight can lead to the unintended disclosure of Proxy-Authorization headers to an incorrec...

Access Control Bypass

Overview Affected versions of this package are vulnerable to Access Control Bypass due to the default configuration of REVERSEPROXYTRUSTEDPROXIES allowing all sources. An attacker can gain unauthorized access by sending spoofed reverse-proxy authentication headers such as X-WEBAUTH-USER...

ALPINE-CVE-2026-8927

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

CVE-2026-8927

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

CVE-2026-9079

CVE-2026-9079 affects libcurl 8.8.0 before 8.21.0, where a flaw in clearing proxy authentication credentials leaves old credentials available for subsequent transfers. This credential-disclosure issue is described across multiple sources (NVD, CIRCL, Debian, Ubuntu advisories, and curl’s page). I...

CVE-2026-8927

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

EUVD-2026-41508

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

CVE-2026-8927 env-set cross-proxy Digest auth state leak

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

CVE-2026-8927

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

USN-8487-1 curl vulnerabilities

Andrew Nesbitt discovered that curl could reuse an existing live connection during STARTTLS-based connection upgrades even when the TLS configuration did not match. A remote attacker could possibly use this issue to cause curl to use an unintended TLS configuration. CVE-2026-8286 Muhamad Arga...

USN-8487-1: curl vulnerabilities

Andrew Nesbitt discovered that curl could reuse an existing live connection during STARTTLS-based connection upgrades even when the TLS configuration did not match. A remote attacker could possibly use this issue to cause curl to use an unintended TLS configuration. CVE-2026-8286 Muhamad Arga...

CVE-2026-54089

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Starting with 2.0.0-rc.1, when FileBrowser is configured with proxy authentication auth.method=proxy, any unauthenticated attacker who can reach the server...

CVE-2026-54089

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Starting with 2.0.0-rc.1, when FileBrowser is configured with proxy authentication auth.method=proxy, any unauthenticated attacker who can reach the server...

CVE-2026-54089

CVE-2026-54089 impacts File Browser when configured with proxy authentication (auth.method=proxy). The issue allows an unauthenticated attacker who can reach the server to impersonate any user—including an administrator—by sending a single forged HTTP header. No credentials are required. Addition...

PT-2026-52537

Name of the Vulnerable Software and Affected Versions File Browser versions 2.0.0-rc.1 and later Description When configured with proxy authentication auth.method=proxy, the software improperly trusts upstream identity headers without validating that requests originate from a trusted proxy. An...

CVE-2026-25119

Gogs is an open source self-hosted Git service. Prior to 0.14.3, when ENABLEREVERSEPROXYAUTHENTICATION is enabled, Gogs accepts the configured authentication header default: X-WEBAUTH-USER directly from client requests without validating that the request originated from a trusted reverse proxy. A...

CVE-2026-25119

Gogs is an open source self-hosted Git service. Prior to 0.14.3, when ENABLEREVERSEPROXYAUTHENTICATION is enabled, Gogs accepts the configured authentication header default: X-WEBAUTH-USER directly from client requests without validating that the request originated from a trusted reverse proxy. A...

UBUNTU-CVE-2026-8927

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...