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CVE Record

CVE-2026-22800: PILOS affected by a CSRF via GET request allows unintentional termination of all active video conferences

PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. Prior to 4.10.0, Cross-Site Request Forgery (CSRF) vulnerability exists in an administrative API endpoint responsible for terminating all active video conferences on a single server. The affected endpoint performs a destructive action but is exposed via an HTTP GET request. Although proper authorization checks are enforced and the endpoint cannot be triggered cross-site, the use of GET allows the action to be implicitly invoked through same-site content (e.g. embedded resources rendered within the application). As a result, an authenticated administrator who views crafted content within the application may unknowingly trigger the endpoint, causing all active video conferences on the server to be terminated without explicit intent or confirmation. This vulnerability is fixed in 4.10.0.

LowCVSS 2.4Not KEV-listedUpdated
Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

PILOS versions before 4.10.0 allow an authenticated administrator to unintentionally end all active video conferences on a server by viewing crafted same-site content inside the application. This is disruptive but limited: it requires admin privileges and user interaction, and sources rate it low severity.

Executive priority

Treat as a scheduled remediation item, not an emergency. Prioritize upgrade where PILOS supports live classes, webinars, or operations where unexpected conference termination would disrupt service.

Technical view

The issue is a CSRF design flaw in a PILOS administrative API endpoint that terminates all active conferences. The endpoint uses HTTP GET for a destructive action. Authorization is enforced and cross-site triggering is reportedly blocked, but same-site embedded content rendered in the application can invoke it. Fixed in PILOS 4.10.0.

Likely exposure

Exposure is limited to organizations running THM-Health PILOS before 4.10.0, especially where administrators use the application while untrusted or user-supplied content may be rendered in same-site contexts.

Exploitation context

No active exploitation is reported in the provided sources, and the CVE is not listed as KEV. Abuse requires an authenticated administrator to view crafted content within the application, leading to availability impact only.

Researcher notes

The public description emphasizes a constrained CSRF: authorization exists and cross-site triggering is not possible. The weakness is destructive state change via GET reachable through same-site rendered content. Evidence supports low availability impact; no confidentiality or integrity impact is indicated.

Mitigation direction

  • Upgrade PILOS to version 4.10.0 or later.
  • Review vendor advisory and commit for exact remediation details.
  • Restrict administrative access to trusted users.
  • Avoid rendering untrusted content in administrative same-site contexts where possible.

Validation and detection

  • Inventory PILOS deployments and identify versions below 4.10.0.
  • Confirm whether administrators can access untrusted or user-controlled content inside PILOS.
  • Review change management records for upgrade to 4.10.0 or later.
  • Check application routes for destructive GET actions if maintaining custom forks.
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

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-352: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2026-22800 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
Low
CVSS
2.4 (3.1)
Known Exploited
No
Published

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

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
2.4CVSS 3.1LowCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L0.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

2.4Low
CVSS 3.1 vector shape for CVE-2026-22800Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
THM-HealthPILOS< 4.10.0Listed
Weakness

CWE details

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

CWE-352 · source CWE mapping

Cross-Site Request Forgery (CSRF)

Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.