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Vulnerabilities

Vulnerability · CVE-2026-22603

OpenProject is an open-source, web-based project management software.

Published Jan 10, 2026 · catalog updated Jan 13, 2026 · OpenProject is an open-source,

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-22603. EPSS is 0.26%. Act only if a listed version of OpenProject is an open-source, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (OpenProject is an open-source,).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.26%
Remediation
Version ranges on file
Affected products
vendor opf openproject < 16.6.2

OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, OpenProject’s unauthenticated password-change endpoint (/account/change_password) was not protected by the same brute-force safeguards that apply to the normal login form. In affected versions, an attacker who can guess or enumerate user IDs can send unlimited password-change requests for a given account without triggering lockout or other rate-limiting controls. This allows automated password-guessing (e.g., with wordlists of common passwords) against valid accounts. Successful guessing results in f

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor opf openproject < 16.6.2< 16.6.2

How to fix CVE-2026-22603

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-22603. EPSS is 0.26%. Act only if a listed version of OpenProject is an open-source, is installed.

Which versions are affected?

Compare what you have installed with opf openproject < 16.6.2 < 16.6.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.26%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 10, 2026 · EUVD

    Detected

    OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, OpenProject’s unauthenticated password-change endpoint (/account/change_password) was not protected by the same brute-force safeguards that apply to the normal login form. In affected versions, an attacker who can guess or enumerate user IDs can send unlimited password-change requests for a given account

  2. Jan 13, 2026 · EUVD

    Updated

    OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, OpenProject’s unauthenticated password-change endpoint (/account/change_password) was not protected by the same brute-force safeguards that apply to the normal login form. In affected versions, an attacker who can guess or enumerate user IDs can send unlimited password-change requests for a given account

Sources

  • CVE.orgVulnerability recordCVE-2026-22603

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-22603

    30-day exploitation probability 0.26%

    first.org
  • EUVDVulnerability recordEUVD-2026-1884

    OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, OpenProject’s unauthenticated password-change endpoint (/account/change_password) was not protected by the same brute-force safeguards that apply to the normal login form. In affected v

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgOct 30, 2026
  • EUVDOct 30, 2026