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CVE Record

CVE-2018-12678: Portainer before 1.18.0 supports unauthenticated requests to the websocket endpoint with an unvalidated id...

Portainer before 1.18.0 supports unauthenticated requests to the websocket endpoint with an unvalidated id query parameter for the /websocket/exec endpoint, which allows remote attackers to bypass intended access restrictions or conduct SSRF attacks.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Portainer before 1.18.0 allowed unauthenticated access to a websocket exec endpoint using an unvalidated id parameter. In business terms, an exposed Portainer instance could let an attacker bypass intended access controls or use the service for server-side request forgery.

Executive priority

Prioritize remediation for any externally reachable Portainer instance because the issue is remote and unauthenticated. Internal-only instances still deserve prompt upgrade because Portainer controls operational infrastructure.

Technical view

CVE-2018-12678 affects Portainer versions before 1.18.0. The /websocket/exec endpoint accepted unauthenticated requests and did not validate the id query parameter, enabling access restriction bypass or SSRF. The provided sources do not include CVSS, CWE, CPE, or detailed patch notes.

Likely exposure

Exposure is most likely where Portainer before 1.18.0 is reachable from untrusted networks. Internet-facing administrative interfaces create the highest concern. The source bundle does not provide formal CPEs or a complete affected-version matrix.

Exploitation context

The CVE description states remote attackers could bypass restrictions or conduct SSRF. CISA KEV status is false, and the provided sources do not show confirmed active exploitation or exploit availability.

Researcher notes

The strongest evidence is the CVE description plus Portainer PR and 1.18.0 release reference. Missing CVSS, CWE, CPE, and detailed vendor advisory data limit precision. Do not infer container escape or host compromise from the supplied evidence alone.

Mitigation direction

  • Upgrade Portainer versions before 1.18.0 to 1.18.0 or a supported later release.
  • Restrict Portainer administrative and websocket endpoints to trusted networks only.
  • Review vendor release notes and guidance before applying production changes.
  • Place Portainer behind strong authentication and access controls where supported.

Validation and detection

  • Inventory Portainer deployments and confirm their running versions.
  • Check whether /websocket/exec is reachable from untrusted networks.
  • Review logs for unexpected /websocket/exec requests or unusual id parameter activity.
  • Confirm post-upgrade behavior against vendor-documented expectations.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2018-12678 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.