How severe is CVE-2026-24755?

CVE-2026-24755 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-24755 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24755?

CVE-2026-24755 affects Accellion Kiteworks. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24755?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-24755 have an EU (EUVD) identifier?

Yes. CVE-2026-24755 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33838.

When was CVE-2026-24755 published?

CVE-2026-24755 was published on 2026-06-01 and last updated on 2026-06-17.

CVE-2026-24755

CVE-2026-24755 is a medium-severity vulnerability in Accellion Kiteworks with a CVSS 3.x base score of 5.4. 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-639.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33838
Weakness: CWE-639
Affected product: Accellion Kiteworks
Published: 2026-06-01
Last modified: 2026-06-17

Description

Kiteworks is a private data network (PDN). Prior to version 9.3.0, an Insecure Direct Object Reference (IDOR) vulnerability in Kiteworks Secure Data Forms allows an authenticated user to modify permissions on resources belonging to other users due to insufficient authorization checks on resource ownership. Upgrade Kiteworks to version 9.3.0 or later to receive a patch.

Frequently asked questions

What is CVE-2026-24755?: Kiteworks is a private data network (PDN). Prior to version 9.3.0, an Insecure Direct Object Reference (IDOR) vulnerability in Kiteworks Secure Data Forms allows an authenticated user to modify permissions on resources belonging to other users due to insufficient authorization checks on resource ownership. Upgrade Kiteworks to version 9.3.0 or later to receive a patch.
How severe is CVE-2026-24755?: CVE-2026-24755 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-24755 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24755?: CVE-2026-24755 affects Accellion Kiteworks. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24755?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-24755 have an EU (EUVD) identifier?: Yes. CVE-2026-24755 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33838.
When was CVE-2026-24755 published?: CVE-2026-24755 was published on 2026-06-01 and last updated on 2026-06-17.

References

https://github.com/kiteworks/security-advisories/security/advisories/GHSA-f8rf-7jq6-gch9

Affected products (1)

cpe:2.3:a:accellion:kiteworks:*:*:*:*:*:*:*:*

More vulnerabilities in Accellion Kiteworks

CVE-2026-23514 — High (CVSS 8.8): Kiteworks is a private data network (PDN). Versions 9.2.0 and 9.2.1 of Kiteworks Core have an access control…
CVE-2021-31586 — High (CVSS 8.8): Accellion Kiteworks before 7.4.0 allows an authenticated user to perform SQL Injection via LDAPGroup Search.
CVE-2026-24752 — High (CVSS 8.2): Kiteworks is a private data network (PDN). Prior to version 9.3.0, a reflected XSS vulnerability in Kiteworks Secure…
CVE-2026-24751 — High (CVSS 8.2): Kiteworks is a private data network (PDN). Prior to version 9.3.0, a reflected XSS vulnerability in Kiteworks Secure…
CVE-2026-28272 — High (CVSS 8.1): Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks Email Protection…
CVE-2026-24782 — High (CVSS 7.6): Kiteworks is a private data network (PDN). Prior to version 9.3.0,ultiple SQL Injection vulnerabilities in Kiteworks…

All CVEs affecting Accellion Kiteworks →

Other CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities

CVE-2025-40805 — Critical (CVSS 10.0): Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an…
CVE-2024-45032 — Critical (CVSS 10.0): A vulnerability has been identified in Industrial Edge Management Pro (All versions < V1.9.5), Industrial Edge…
CVE-2026-34037 — Critical (CVSS 9.9): Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to…
CVE-2026-52782 — Critical (CVSS 9.9): OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through…
CVE-2026-45552 — Critical (CVSS 9.9): Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior,…
CVE-2026-29200 — Critical (CVSS 9.9): A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and…

Browse all CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities →