How severe is CVE-2026-22602?

CVE-2026-22602 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-22602 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22602?

CVE-2026-22602 affects Openproject. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22602?

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

Does CVE-2026-22602 have an EU (EUVD) identifier?

Yes. CVE-2026-22602 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1885.

When was CVE-2026-22602 published?

CVE-2026-22602 was published on 2026-01-10 and last updated on 2026-06-17.

CVE-2026-22602

CVE-2026-22602 is a low-severity vulnerability in Openproject with a CVSS 3.x base score of 3.5. 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-200.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1885
Weakness: CWE-200
Affected product: Openproject
Published: 2026-01-10
Last modified: 2026-06-17

Description

OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, a low‑privileged logged-in user can view the full names of other users. Since user IDs are assigned sequentially and predictably (e.g., 1 to 1000), an attacker can extract a complete list of all users’ full names by iterating through these URLs. The same behavior can also be reproduced via the OpenProject API, allowing automated retrieval of full names through the API as well. This issue has been patched in version 16.6.2. Those who are unable to upgrade may apply the patch manually.

Frequently asked questions

What is CVE-2026-22602?: OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, a low‑privileged logged-in user can view the full names of other users. Since user IDs are assigned sequentially and predictably (e.g., 1 to 1000), an attacker can extract a complete list of all users’ full names by iterating through these URLs. The same behavior can also be reproduced via the OpenProject API, allowing automated retrieval of full names through the API as well. This issue has been patched in version 16.6.2. Those who are unable to upgrade may apply the patch manually.
How severe is CVE-2026-22602?: CVE-2026-22602 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-22602 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22602?: CVE-2026-22602 affects Openproject. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22602?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-22602 have an EU (EUVD) identifier?: Yes. CVE-2026-22602 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1885.
When was CVE-2026-22602 published?: CVE-2026-22602 was published on 2026-01-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openproject:openproject:*:*:*:*:*:*:*:*

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