ZITADEL: Server-Side Request Forgery (SSRF) and Denylist Bypass in Outgoing HTTP Components

Summary A Server-Side Request Forgery SSRF vulnerability was discovered in Zitadel affecting: HTTP Notification Channels: Used as an alternative to SMTP/Twilio configurations, sending payloads to user-defined URLs via HTTP POST webhooks. OIDC BackChannel Logout: Terminates sessions across differe...

CVE-2026-42858

Open edX Platform enables the authoring and delivery of online learning at any scale. The syncproviderdata endpoint in SAMLProviderDataViewSet allows authenticated Enterprise Admin users to supply an arbitrary URL via the metadataurl POST parameter. This URL is passed directly to requests.get in...

PT-2026-39713

Open edX Platform enables the authoring and delivery of online learning at any scale. The sync provider data endpoint in SAMLProviderDataViewSet allows authenticated Enterprise Admin users to supply an arbitrary URL via the metadata url POST parameter. This URL is passed directly to requests.get ...

CVE-2026-42181

Lemmy prior to 0.19.18 is vulnerable to SSRF through post link metadata: the system validates the top-level URL against internal ranges, but the og:image URL extracted from the page is not subjected to the same restriction. An authenticated low-privileged user can post a page whose og:image point...

PT-2026-37253

Name of the Vulnerable Software and Affected Versions Admidio versions prior to 5.0.9 Description An incomplete fix for Server-Side Request Forgery SSRF in the fetch metadata.php file allows for DNS rebinding. The system validates the resolved IP address but passes the original hostname-based URL...

CVE-2026-32812

Admidio is an open-source user management solution. In versions 5.0.0 through 5.0.6, unrestricted URL fetch in the SSO Metadata API can result in SSRF and local file reads. The SSO Metadata fetch endpoint at modules/sso/fetchmetadata.php accepts an arbitrary URL via $GET'url', validates it only...

CVE-2026-32812

Admidio is an open-source user management solution. In versions 5.0.0 through 5.0.6, unrestricted URL fetch in the SSO Metadata API can result in SSRF and local file reads. The SSO Metadata fetch endpoint at modules/sso/fetchmetadata.php accepts an arbitrary URL via $GET'url', validates it only...

CVE-2026-32812

Admidio CVE-2026-32812 affects versions 5.0.0–5.0.6 where the SSO Metadata API endpoint at modules/sso/fetch_metadata.php reads a user-supplied URL and passes it to file_get_contents() after only PHP FILTER_VALIDATE_URL validation. This allows an authenticated administrator to cause Local File Re...

Admidio Vulnerable to SSRF and Local File Read via Unrestricted URL Fetch in SSO Metadata Endpoint

Summary The SSO metadata fetch endpoint at modules/sso/fetchmetadata.php accepts an arbitrary URL via $GET'url', validates it only with PHP's FILTERVALIDATEURL, and passes it directly to filegetcontents. FILTERVALIDATEURL accepts file://, http://, ftp://, data://, and php:// scheme URIs. An...

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 @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...

EUVD-2026-11673

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

CVE-2026-30953

LinkAce is a self-hosted archive to collect website links. When a user creates a link via POST /links, the server fetches HTML metadata from the provided URL LinkRepository::create calls HtmlMeta::getFromUrl. The LinkStoreRequest validation rules do not include NoPrivateIpRule, allowing server-si...