Common Weakness Enumeration

CWE-918

Allowed

Server-Side Request Forgery (SSRF)

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

6549 vulnerabilities reference this CWE, most recent first.

CVE-2026-71250 (GCVE-0-2026-71250)

Vulnerability from cvelistv5 – Published: 2026-08-05 10:57 – Updated: 2026-08-10 11:46
VLAI
Title
Firefly III - Webhook URL Validation Explicitly Allows Loopback and Is Bypassable via DNS Rebinding
Summary
Firefly III's webhook URL validator (IsValidWebhookUrl.php) filters most private/reserved IPv4 ranges but contains an explicit early-return that allows any resolved address in 127.0.0.0/8, permitting an authenticated user (with webhooks enabled, which is off by default) to configure a webhook targeting loopback services on the server.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 12:41 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
TuranSec CNA under the redhat root
CNA scorecard C 70/100 over 189 records in the last 180 days details
References
URL Tags
https://github.com/firefly-iii/firefly-iii third-party-advisory
Impacted products
Date Public
2026-08-05 10:57
Credits
Bobur Abdugafforov
Show details on NVD website
To clipboard 

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CVE-2026-71246 (GCVE-0-2026-71246)

Vulnerability from cvelistv5 – Published: 2026-08-05 10:56 – Updated: 2026-08-10 11:45
VLAI
Title
Pixelfed - Authenticated SSRF via Remote URL Search
Summary
Pixelfed's SearchController (behind the auth middleware) accepts a URL via its remote-search parameters and fetches it server-side through ActivityPubFetchService, whose validateUrl only blocks the literal hosts 127.0.0.1, localhost, and ::1 and requires https, without checking the resolved IP against private, internal, or link-local ranges (e.g. 169.254.169.254).
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 12:32 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
TuranSec CNA under the redhat root
CNA scorecard C 70/100 over 189 records in the last 180 days details
References
URL Tags
https://github.com/pixelfed/pixelfed third-party-advisory
Impacted products
Date Public
2026-08-05 10:56
Credits
Bobur Abdugafforov
Show details on NVD website
To clipboard 

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CVE-2026-71244 (GCVE-0-2026-71244)

Vulnerability from cvelistv5 – Published: 2026-08-05 10:56 – Updated: 2026-08-10 11:45
VLAI
Title
Paperless-ngx - Mail Account Test Connection Leaks Stored IMAP/OAuth Credentials to Attacker-Controlled Host
Summary
Paperless-ngx's MailAccountViewSet.test action, when called with an existing account's ID and a masked password field, reuses the stored password, account_type, refresh_token, and expiration from that existing account while allowing the caller to supply a different imap_server, imap_port, and imap_security in the same request.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 12:49 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
TuranSec CNA under the redhat root
CNA scorecard C 70/100 over 189 records in the last 180 days details
References
URL Tags
https://github.com/paperless-ngx/paperless-ngx third-party-advisory
Impacted products
Date Public
2026-08-05 10:56
Credits
Bobur Abdugafforov
Show details on NVD website
To clipboard 

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CVE-2026-71211 (GCVE-0-2026-71211)

Vulnerability from cvelistv5 – Published: 2026-08-05 06:59 – Updated: 2026-08-10 11:45
VLAI
Title
mlflow - Unvalidated Gateway Secret api_base Enables SSRF via Gateway Proxy Endpoint
Summary
MLflow's AI Gateway accepts an auth_config.api_base value when creating a gateway secret (mlflow/server/handlers.py, _create_gateway_secret) with no validation of scheme, host, or IP range; the value is stored verbatim. The gateway proxy endpoint (mlflow/server/gateway_api.py, raw_proxy) subsequently issues an HTTP request to that stored api_base plus a caller-supplied path and returns the full response body.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 13:26 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
TuranSec CNA under the redhat root
CNA scorecard C 70/100 over 189 records in the last 180 days details
References
Impacted products
Vendor Product Version
mlflow mlflow Affected: 0 , ≤ 3.14.0 (custom)
Create a notification for this product.
Date Public
2026-08-05 06:59
Credits
Abdivasiyev Sunnatillo
Show details on NVD website
To clipboard 

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CVE-2026-71208 (GCVE-0-2026-71208)

Vulnerability from cvelistv5 – Published: 2026-08-05 06:59 – Updated: 2026-08-12 07:44
VLAI
Title
KubeSphere - SSRF via Unvalidated Cluster CRD Connection Endpoint in Cluster Reconciliation
Summary
KubeSphere's cluster-controller reconciliation (pkg/utils/clusterclient/clusterclient.go, addCluster) processes every Cluster custom resource's connection configuration and immediately calls Discovery.ServerVersion against the CRD-specified Kubernetes API endpoint, which is parsed only for URL syntax (url.Parse) with no allow/deny-list for loopback, RFC1918 private ranges, link-local, or cloud-metadata addresses (e.g. 169.254.169.254).
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 13:20 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
TuranSec CNA under the redhat root
CNA scorecard C 70/100 over 189 records in the last 180 days details
References
Impacted products
Vendor Product Version
kubesphere KubeSphere Affected: 4.0.0 , ≤ 4.1.3-rc.0 (custom)
Create a notification for this product.
Date Public
2026-08-05 06:59
Credits
Ashik Mohamed (ashikmd7)
Show details on NVD website
To clipboard 

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CVE-2026-71198 (GCVE-0-2026-71198)

Vulnerability from cvelistv5 – Published: 2026-09-14 06:54 – Updated: 2026-09-14 14:41
VLAI
Summary
In OpenStack Glance before 32.0.1, the location API does not validate destination hosts when adding an HTTP location to an image. Unlike the web-download import path, the location API only checks the URL scheme and does not apply the import_filtering_opts host restrictions. An authenticated user can add a location pointing to internal endpoints such as the cloud metadata service (169.254.169.254), and retrieve the response by downloading the image data. This affects both the new POST /v2/images/{id}/locations API and the old PATCH API when show_multiple_locations is enabled. Deployments with the HTTP store backend enabled are affected.
Severity
7 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 14:40 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2351 records in the last 180 days details
References
Impacted products
Vendor Product Version
OpenStack Glance Affected: 16.0.0 , < 30.2.1 (semver)
Affected: 31.0.0 , < 31.1.1 (semver)
Affected: 32.0.0 , < 32.0.1 (semver)
    cpe:2.3:a:openstack:glance:*:*:*:*:*:*:*:*
    cpe:2.3:a:openstack:glance:*:*:*:*:*:*:*:*
    cpe:2.3:a:openstack:glance:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-71172 (GCVE-0-2026-71172)

Vulnerability from cvelistv5 – Published: 2026-08-26 18:44 – Updated: 2026-08-26 19:46
VLAI
Summary
Dell Cloud Disaster Recovery, versions 20.2 and prior, contain a Server-Side Request Forgery (SSRF) vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Server-side request forgery.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 19:32 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
dell CNA under the mitre root
CNA scorecard C 70/100 over 442 records in the last 180 days details
References
Impacted products
Vendor Product Version
Dell Cloud Disaster Recovery Affected: 0 , < CDR 20.3 (semver)
Create a notification for this product.
Date Public
2026-08-23 18:30
Credits
Dell would like to thank moonv for reporting this issue
Show details on NVD website
To clipboard 

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CVE-2026-70667 (GCVE-0-2026-70667)

Vulnerability from cvelistv5 – Published: 2026-08-18 18:55 – Updated: 2026-08-19 15:16
VLAI
Title
Lemur: SSRF protection in certificate revocation checking bypassable via HTTP redirects and DNS rebinding (incomplete fix for CVE-2026-55162)
Summary
Lemur manages TLS certificate creation. Prior to 1.9.3, _validate_revocation_url in lemur/certificates/verify.py checked the original CRL or OCSP URL but the later request could reach a different destination. The CRL requests.get call followed HTTP redirects without validating each Location target, so a public attacker-controlled URL could redirect to loopback, RFC1918, link-local, or instance-metadata addresses. Validation and connection also performed separate DNS resolutions, creating a time-of-check time-of-use window for DNS rebinding on both CRL and OCSP paths. An operator uploading a certificate through POST /api/1/certificates/upload could therefore induce blind internal requests despite the earlier mitigation. The fix disables redirects and pins validated addresses while preserving the correct Host value. This issue is fixed in version 1.9.3.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 15:16 UTC
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7761 records in the last 180 days details
References
Impacted products
Vendor Product Version
Netflix lemur Affected: < 1.9.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-70666 (GCVE-0-2026-70666)

Vulnerability from cvelistv5 – Published: 2026-08-18 19:05 – Updated: 2026-08-19 18:20
VLAI
Title
Lemur: Server-Side Request Forgery via the ACME client following server-controlled URLs
Summary
Lemur manages TLS certificate creation. Prior to 1.9.3, an authority-role member could update acme_url through PUT /api/1/authorities/ without revalidation and direct setup_acme_client_no_retry to an attacker-controlled ACME server. ACME directory and order responses contain newNonce, newOrder, authorizations, and finalize URLs chosen by that server. The Lemur ClientV2 followed those URLs without requiring their host to match the configured directory host, allowing JWS-signed requests to internal services or cloud metadata endpoints. The issue required an ACME authority and a user authorized for that authority, but did not require global administrator privileges. The fix revalidates updates and introduces _PinnedClientNetwork to enforce a single allowed host for the complete ACME flow. This issue is fixed in version 1.9.3.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 18:04 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7761 records in the last 180 days details
References
Impacted products
Vendor Product Version
Netflix lemur Affected: < 1.9.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-70620 (GCVE-0-2026-70620)

Vulnerability from cvelistv5 – Published: 2026-08-04 21:16 – Updated: 2026-08-05 14:16 X_Open Source
VLAI
Title
Odysseus SSRF via Embedding Endpoint Configuration
Summary
Odysseus before commit 87babb5 contains a server-side request forgery vulnerability that allows admin-privileged attackers to direct the server to probe internal network resources by supplying arbitrary URLs to the embedding endpoint configuration without scheme, host, IP range, or DNS rebind validation. Attackers can submit loopback addresses, RFC 1918 ranges, or link-local addresses through the embedding endpoint API to partially read responses from cloud instance metadata services, internal APIs, and other hosts reachable from the server.
Severity
6.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
6.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:16 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6753 records in the last 180 days details
References
Impacted products
Vendor Product Version
odysseus-dev odysseus Affected: 0 , < 87babb58d57897089b133b313e2ab6d09e7ef54e (git)
Create a notification for this product.
Date Public
2026-05-31 00:00
Credits
Yunus AYDIN
Show details on NVD website
To clipboard 

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No mitigation information available for this CWE.

CAPEC-664: Server Side Request Forgery

An adversary exploits improper input validation by submitting maliciously crafted input to a target application running on a server, with the goal of forcing the server to make a request either to itself, to web services running in the server’s internal network, or to external third parties. If successful, the adversary’s request will be made with the server’s privilege level, bypassing its authentication controls. This ultimately allows the adversary to access sensitive data, execute commands on the server’s network, and make external requests with the stolen identity of the server. Server Side Request Forgery attacks differ from Cross Site Request Forgery attacks in that they target the server itself, whereas CSRF attacks exploit an insecure user authentication mechanism to perform unauthorized actions on the user's behalf.

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