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CVE Record

CVE-2026-1568: Rapid7 InsightVM Signature Validation Vulnerability

Rapid7 InsightVM versions before 8.34.0 contain a signature verification issue on the Assertion Consumer Service (ACS) cloud endpoint that could allow an attacker to gain unauthorized access to InsightVM accounts setup via "Security Console" installations, resulting in full account takeover. The issue occurs due to the application processing these unsigned assertions and issuing session cookies that granted access to the targeted user accounts. This has been fixed in version 8.34.0 of InsightVM.

CriticalCVSS 9.6Not KEV-listedUpdated
Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

CVE-2026-1568 is a critical Rapid7 InsightVM account takeover flaw. Before version 8.34.0, the ACS cloud endpoint could process unsigned assertions and issue session cookies for targeted user accounts. For affected Security Console-based setups, this could let an attacker gain full account access.

Executive priority

Treat as immediate priority for any affected InsightVM environment. The issue affects a security platform and can lead to full account takeover. Upgrade validation should be tracked urgently, even though public active exploitation is not confirmed in the provided sources.

Technical view

Rapid7 describes a signature verification issue affecting InsightVM versions before 8.34.0. The ACS cloud endpoint accepted unsigned assertions and created authenticated session cookies, enabling full account takeover. The CVSS 3.1 score is 9.6, with network attack vector, low complexity, low privileges required, no user interaction, and high confidentiality and integrity impact.

Likely exposure

Likely exposure is limited to Rapid7 InsightVM deployments before 8.34.0, specifically accounts set up via Security Console installations. The source data does not provide complete CPEs or detailed deployment conditions, so teams should verify their InsightVM version and configuration against Rapid7 guidance.

Exploitation context

The provided sources do not state active exploitation, and this CVE is not marked as KEV in the supplied data. The vulnerability is still urgent because successful exploitation could result in full InsightVM account takeover through authentication/session handling weaknesses.

Researcher notes

The CVE record names InsightVM before 8.34.0, but the affected-product metadata is sparse and lists “Vulnerability Management” with version “0” and default unaffected. Rely on Rapid7’s release notes and the CVE narrative for practical scoping. No exploit details are provided in the source bundle.

Mitigation direction

  • Upgrade Rapid7 InsightVM to version 8.34.0 or later.
  • Review Rapid7 release notes and advisory guidance for deployment-specific instructions.
  • Prioritize environments using Security Console-based InsightVM account setup.
  • Review access logs for unexpected sessions or account activity.
  • Rotate credentials or invalidate sessions if suspicious access is found.

Validation and detection

  • Confirm the deployed InsightVM version is 8.34.0 or later.
  • Identify whether accounts were set up via Security Console installations.
  • Check Rapid7 documentation for any additional configuration requirements.
  • Review authentication and session logs around ACS-related activity.
  • Document remediation status for vulnerability management tracking.
Prepared
Confidence
high
Sources
3

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.

cwe · medium confidence lookup

CWE-287: Credential and account abuse lookup

Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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.

Open ATT&CK lookup
cwe · low confidence lookup

CWE-347: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-1568 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.6 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

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
2Source 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
9.6CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N3.15.8Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

9.6Critical
CVSS 3.1 vector shape for CVE-2026-1568Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Rapid7Vulnerability Management0unaffected
Weakness

CWE details

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

CWE-287 · source CWE mapping

Improper Authentication

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

CWE-347 · source CWE mapping

Improper Verification of Cryptographic Signature

Improper Verification of Cryptographic Signature represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.