How severe is CVE-2024-26135?

CVE-2024-26135 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-26135 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-26135?

CVE-2024-26135 affects Meshcentral. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-26135?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-26135 have an EU (EUVD) identifier?

Yes. CVE-2024-26135 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0618.

When was CVE-2024-26135 published?

CVE-2024-26135 was published on 2024-02-20 and last updated on 2026-06-17.

CVE-2024-26135

CVE-2024-26135 is a high-severity vulnerability in Meshcentral with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-346.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0618
Weakness: CWE-346
Affected product: Meshcentral
Published: 2024-02-20
Last modified: 2026-06-17

Description

MeshCentral is a full computer management web site. Versions prior to 1.1.21 a cross-site websocket hijacking (CSWSH) vulnerability within the control.ashx endpoint. This component is the primary mechanism used within MeshCentral to perform administrative actions on the server. The vulnerability is exploitable when an attacker is able to convince a victim end-user to click on a malicious link to a page hosting an attacker-controlled site. The attacker can then originate a cross-site websocket connection using client-side JavaScript code to connect to `control.ashx` as the victim user within MeshCentral. Version 1.1.21 contains a patch for this issue.

Frequently asked questions

What is CVE-2024-26135?: MeshCentral is a full computer management web site. Versions prior to 1.1.21 a cross-site websocket hijacking (CSWSH) vulnerability within the control.ashx endpoint. This component is the primary mechanism used within MeshCentral to perform administrative actions on the server. The vulnerability is exploitable when an attacker is able to convince a victim end-user to click on a malicious link to a page hosting an attacker-controlled site. The attacker can then originate a cross-site websocket connection using client-side JavaScript code to connect to `control.ashx` as the victim user within MeshCentral. Version 1.1.21 contains a patch for this issue.
How severe is CVE-2024-26135?: CVE-2024-26135 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-26135 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-26135?: CVE-2024-26135 affects Meshcentral. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-26135?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-26135 have an EU (EUVD) identifier?: Yes. CVE-2024-26135 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0618.
When was CVE-2024-26135 published?: CVE-2024-26135 was published on 2024-02-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:meshcentral:meshcentral:*:*:*:*:*:*:*:*

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CVE-2023-51837 — Critical (CVSS 9.8): Ylianst MeshCentral 1.1.16 is vulnerable to Missing SSL Certificate Validation.
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CVE-2023-51842 — High (CVSS 7.5): An algorithm-downgrade issue was discovered in Ylianst MeshCentral 1.1.16.

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