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CVE Record

CVE-2026-28230: In SteVe, any authenticated charger can terminate any other charger's active transaction (missing ownership verification on StopTransaction)

SteVe is an open-source EV charging station management system. In versions up to and including 3.11.0, when a charger sends a StopTransaction message, SteVe looks up the transaction solely by transactionId (a sequential integer starting from 1) without verifying that the requesting charger matches the charger that originally started the transaction. Any authenticated charger can terminate any other charger’s active session across the entire network. The root cause is in OcppServerRepositoryImpl.getTransaction() which queries only by transactionId with no chargeBoxId ownership check. The validator checks that the transaction exists and is not already stopped but never verifies identity. As an attacker controlling a single registered charger I could enumerate sequential transaction IDs and send StopTransaction messages targeting active sessions on every other charger on the network simultaneously. Combined with FINDING-014 (unauthenticated SOAP endpoints), no registered charger is even required — the attack is executable with a single curl command requiring only a known chargeBoxId. Commit 7f169c6c5b36a9c458ec41ce8af581972e5c724e contains a fix for the issue.

MediumCVSS 5.7Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

SteVe, an EV charging management system, can let one authenticated charger stop another charger’s active charging session. The weakness affects versions up to and including 3.11.0. Business impact is mainly service disruption: charging sessions may be terminated across a managed network. Public sources do not show confirmed active exploitation.

Executive priority

Treat as a near-term remediation item for EV charging operators using SteVe. The issue can disrupt charging availability, but current public evidence does not support emergency prioritization absent exposure to untrusted chargers or related SOAP endpoint weaknesses.

Technical view

StopTransaction handling looks up transactions only by transactionId, a sequential integer, without confirming the requesting chargeBoxId owns the transaction. Validation confirms the transaction exists and is not already stopped, but not charger identity. The advisory identifies OcppServerRepositoryImpl.getTransaction() as the root cause and points to commit 7f169c6c5b36a9c458ec41ce8af581972e5c724e as the fix.

Likely exposure

Organizations running steve-community SteVe versions <= 3.11.0 are potentially exposed, especially where untrusted or third-party chargers can authenticate to the management system. Exposure may be higher if related unauthenticated SOAP endpoint issues are present, as described in the advisory text.

Exploitation context

The CVSS vector indicates network access, low complexity, low privileges, no user interaction, and high availability impact. The sources describe proof-of-concept feasibility, but Glexia has no cited evidence of active exploitation or CISA KEV listing for this CVE.

Researcher notes

The key security boundary is transaction ownership between charger identities. Validate the fix by confirming StopTransaction cannot affect transactions belonging to another chargeBoxId. Avoid assuming unauthenticated exposure unless the related SOAP endpoint finding also applies in the assessed environment.

Mitigation direction

  • Identify all SteVe deployments and their versions.
  • Prioritize systems running SteVe <= 3.11.0.
  • Apply the vendor fix commit or a release containing it when available.
  • If no packaged release exists, evaluate backporting the ownership check.
  • Review vendor guidance before making production changes.
  • Restrict charger onboarding to trusted devices where operationally possible.

Validation and detection

  • Confirm whether SteVe version is <= 3.11.0.
  • Review StopTransaction handling for chargeBoxId ownership verification.
  • Verify transaction lookup includes the requesting charger identity.
  • Check whether the fix commit is present in deployed code.
  • Review logs for unusual StopTransaction activity across chargers.
Prepared
Confidence
high
Sources
4

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

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cwe · medium confidence lookup

CWE-284: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2026-28230 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.7 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

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.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.7CVSS 4.0MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P——Primary CVE score

Vulnerability scoring details

Base CVSS 4.0 score

5.7Medium
CVSS 4.0 vector shape for CVE-2026-28230Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
steve-communitysteve<= 3.11.0Listed
Weakness

CWE details

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

CWE-284 · source CWE mapping

Improper Access Control

Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.