CVE-2026-32236 @backstage/plugin-auth-backend: SSRF in experimental CIMD metadata fetch

Backstage is an open framework for building developer portals. Prior to 0.27.1, a Server-Side Request Forgery SSRF vulnerability exists in @backstage/plugin-auth-backend when auth.experimentalClientIdMetadataDocuments.enabled is set to true. The CIMD metadata fetch validates the initial clientid...

CVE-2026-32236

CVE-2026-32236 affects the Backstage npm package @backstage/plugin-auth-backend. The SSRF flaw occurs in the CIMD metadata fetch when auth.experimentalClientIdMetadataDocuments.enabled is true: the initial client_id hostname is validated against private IP ranges, but this validation isn’t enforc...

CVE-2026-32235

Backstage is an open framework for building developer portals. Prior to 0.27.1, the experimental OIDC provider in @backstage/plugin-auth-backend is vulnerable to a redirect URI allowlist bypass. Instances that have enabled experimental Dynamic Client Registration or Client ID Metadata Documents a...

CVE-2026-32235 @backstage/plugin-auth-backend: OAuth redirect URI allowlist bypass

Backstage is an open framework for building developer portals. Prior to 0.27.1, the experimental OIDC provider in @backstage/plugin-auth-backend is vulnerable to a redirect URI allowlist bypass. Instances that have enabled experimental Dynamic Client Registration or Client ID Metadata Documents a...

CVE-2026-32235

Summary of CVE-2026-32235 (Backstage plugin-auth-backend) : The experimental OIDC provider in @backstage/plugin-auth-backend is vulnerable to a redirect URI allowlist bypass before version 0.27.1. When experimental Dynamic Client Registration or Client ID Metadata Documents are enabled and allowe...

CVE-2026-32235 @backstage/plugin-auth-backend: OAuth redirect URI allowlist bypass

Backstage is an open framework for building developer portals. Prior to 0.27.1, the experimental OIDC provider in @backstage/plugin-auth-backend is vulnerable to a redirect URI allowlist bypass. Instances that have enabled experimental Dynamic Client Registration or Client ID Metadata Documents a...

GHSA-QP4C-XG64-7C6X @backstage/plugin-auth-backend: SSRF in experimental CIMD metadata fetch

Impact A Server-Side Request Forgery SSRF vulnerability exists in @backstage/plugin-auth-backend when auth.experimentalClientIdMetadataDocuments.enabled is set to true. The CIMD metadata fetch validates the initial clientid hostname against private IP ranges but does not apply the same validation...

Server-side Request Forgery (SSRF)

Overview @backstage/plugin-auth-backend is an A Backstage backend plugin that handles authentication Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the CIMD metadata fetch when the auth.experimentalClientIdMetadataDocuments.enabled setting is enabled. An...

EUVD-2026-11673

@backstage/plugin-auth-backend: SSRF in experimental CIMD metadata fetch...

Open Redirect

Overview @backstage/plugin-auth-backend is an A Backstage backend plugin that handles authentication Affected versions of this package are vulnerable to Open Redirect via the OAuth redirect URI validation bypass. An attacker can intercept authorization codes by crafting a redirect URI that bypass...

Backstage 代码问题漏洞

Backstage is an open-source application developed by Backstage. It serves as an open platform for building developer portals. Versions of Backstage prior to 0.27.1 contained code-related vulnerabilities. These vulnerabilities stemmed from server-side request forgeing when the experimental client ...

PT-2026-25052

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.27.1 Description Backstage is an open framework for building developer portals. A Server-Side Request Forgery SSRF issue exists in the @backstage/plugin-auth-backend component when the...

PT-2026-25051

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.27.1 Description Backstage, an open framework for building developer portals, has an issue in the experimental OIDC provider within the @backstage/plugin-auth-backend component. Specifically, a redirect URI...

Layered Performance Analysis of TLS 1.3 Handshakes: Classical, Hybrid, and Pure Post-Quantum Key Exchange

In this paper, we present a laboratory study focused on the impact of post-quantum cryptography PQC algorithms on multiple layers of stateful HTTP over TLS transactions: the TCP handshake, the intermediate TCP-TLS layer, the TLS handshake, the intermediate TLS layer, and the HTTP application laye...

BIT-MASTODON-2026-27477 Mastodon has SSRF via unvalidated FASP Provider base_url

Mastodon is a free, open-source social network server based on ActivityPub. FASP registration requires manual approval by an administrator. In versions 4.4.0 through 4.4.13 and 4.5.0 through 4.5.6, an unauthenticated attacker can register a FASP with an attacker-chosen baseurl that includes or...

BIT-MASTODON-2026-27468 Mastodon may allow unconfirmed FASP to make subscriptions

Mastodon is a free, open-source social network server based on ActivityPub. FASP registration requires manual approval by an administrator. In versions 4.4.0 through 4.4.13 and 4.5.0 through 4.5.6, actions performed by a FASP to subscribe to account/content lifecycle events or to backfill content...

SvelteKit has deserialization expansion in unvalidated `form` remote function leading to Denial of Service (experimental only)

Some relatively small inputs can cause very large files arrays in form handlers. If the SvelteKit application code doesn't check files.length or individual files' sizes and performs expensive processing with them, it can result in Denial of Service. Only users with experimental.remoteFunctions:...

GHSA-FPG4-JHQR-589C SvelteKit has deserialization expansion in unvalidated `form` remote function leading to Denial of Service (experimental only)

Some relatively small inputs can cause very large files arrays in form handlers. If the SvelteKit application code doesn't check files.length or individual files' sizes and performs expensive processing with them, it can result in Denial of Service. Only users with experimental.remoteFunctions:...

CVE-2026-27468

Mastodon is a free, open-source social network server based on ActivityPub. FASP registration requires manual approval by an administrator. In versions 4.4.0 through 4.4.13 and 4.5.0 through 4.5.6, actions performed by a FASP to subscribe to account/content lifecycle events or to backfill content...

CVE-2026-27477

Mastodon CVE-2026-27477 describes an SSRF risk in the FASP feature: unauthenticated registration of a FASP with a base_url that can resolve to an internal address, when the server has EXPERIMENTAL_FEATURES including fasp enabled. Affected: Mastodon versions 4.4.0–4.4.13 and 4.5.0–4.5.6. Impact: s...