CVE-2026-22800VulnerabilityPublished 12 Jan 2026

CVE-2026-22800: THM-Health PILOS · Cross-Site Request Forgery (CSRF)

Affects THM-Health PILOSSource CVE Database V5

Not known to be exploited · CVSS 2.4 Low : upgrade to 4.10.0 when convenient.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

2.4Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.10.0

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 12 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade PILOS and thm-health/PILOS to 4.10.0.

Affected software

Product	Affected	Fixed in
THM-HealthPILOS	Affected <4.10.0	Fixed in 4.10.0
GitHubthm-health/PILOS`pkg:github/thm-health/PILOS`Other threats	Affected <4.10.0	Fixed in 4.10.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should upgrade PILOS to version 4.10.0 or later, where this vulnerability is fixed. Until upgrading, administrators should avoid interacting with untrusted or suspicious content within the application to prevent inadvertent triggering of the endpoint. Implementing Content Security Policy (CSP) and restricting embedded content can reduce the risk of same-site CSRF triggers. Additionally, reviewing and restricting administrative access to trusted personnel only will limit exposure. Monitoring logs for unusual API calls to the termination endpoint can help detect attempted exploitation. Finally, consider isolating the administrative interface from general user access or using multi-factor authentication to reduce the risk of compromised administrator accounts.

Description

CVE-2026-22800 is a Cross-Site Request Forgery (CSRF) vulnerability in THM-Health's PILOS platform versions prior to 4.10.0. The vulnerability exists in an administrative API endpoint that terminates all active video conferences on a server via an HTTP GET request. Although authorization checks prevent cross-site exploitation, the use of GET allows same-site content to trigger this destructive action without explicit administrator intent. This can cause disruption by terminating all ongoing video conferences unexpectedly. The vulnerability has a low CVSS score of 2.4 and requires authenticated administrator interaction with crafted content. The issue is fixed in version 4.10.

Impact

For European organizations using PILOS versions prior to 4.10.0, this vulnerability could lead to denial of service for live online seminars and video conferences by abruptly terminating all active sessions on a server. This disruption could affect critical meetings, training sessions, or educational activities, potentially causing operational delays and reputational damage. Since the vulnerability requires an authenticated administrator to interact with crafted content, the risk is somewhat limited to insider threats or targeted social engineering attacks. However, in environments where PILOS is heavily used for remote collaboration or e-learning, such disruptions could impact productivity and continuity. The impact on confidentiality and integrity is negligible, but availability is compromised. Organizations relying on PILOS for critical communication should prioritize patching to avoid service interruptions.

CWE-352Cross-Site Request Forgery (CSRF) (opens in a new tab)
Compound weaknessLikelihood of exploit: MediumCWE Top 25 (2025): #3OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation
Ensure that the application is free of cross-site scripting issues (CWE-79), because most CSRF defenses can be bypassed using attacker-controlled script.
Architecture and Design
Generate a unique nonce for each form, place the nonce into the form, and verify the nonce upon receipt of the form. Be sure that the nonce is not predictable (CWE-330).
OWASP Cheat Sheets
REST Assessment (opens in a new tab)
REST Security (opens in a new tab)
Cross-Site Request Forgery Prevention (opens in a new tab)
Authorization Testing Automation (opens in a new tab)
Insecure Direct Object Reference Prevention (opens in a new tab)
OWASP ASVS 4.0.3
V13.2.3 (opens in a new tab)
V4.2.2 (opens in a new tab)
V13.3.2 (opens in a new tab)
Attack patterns
JSON Hijacking (aka JavaScript Hijacking) (opens in a new tab)
Cross-Domain Search Timing (opens in a new tab)
Cross Site Identification (opens in a new tab)
Cross Site Request Forgery (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 21 Jan 2026, 03:04 UTC

WeaknessesCWE-352

Technical details

References

Community reviews

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