CVE-2026-44731

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, the web application's meetings filter feature leaks whether a given user ID corresponds to a valid account and discloses the user's full name, allowing an attacker to enumerate all existing user accounts by probing user IDs and observing differences in the server response. This vulnerability is fixed in 17.3.2 and 17.4.0.

CVSS v3
4.3
EG Score
4.3(medium)
EPSS
8.3%
KEV
Not listed

Published

June 26, 2026

Last Modified

June 29, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
Patch available. Sources: github.
github Patch Available

Improper Access Control on OpenProject through /projects/[projectName]/meetings via "invited_user_id" in GET parameter "filters" leads to user names disclosure · Advisory · opf/openproject · GitHub

https://github.com/opf/openproject/security/advisories/GHSA-x7j3-cfgf-7mc4

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-13 06:13 UTCEPSS rescore
  2. 2026-07-12 21:26 UTCEG score recompute
  3. 2026-07-12 05:46 UTCEPSS rescore
  4. 2026-07-11 19:53 UTCEG score recompute
  5. 2026-07-11 08:27 UTCEPSS rescore
  6. 2026-07-10 18:20 UTCEG score recompute
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-09 16:38 UTCEG score recompute
  9. 2026-07-08 15:16 UTCEPSS rescore
  10. 2026-07-08 14:48 UTCEG score recompute
  11. 2026-07-07 13:46 UTCEPSS rescore
  12. 2026-07-07 13:16 UTCEG score recompute
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 11:43 UTCEG score recompute
  15. 2026-07-05 10:08 UTCEG score recompute
  16. 2026-07-05 02:30 UTCEPSS rescore
  17. 2026-07-04 08:33 UTCEG score recompute
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-03 07:00 UTCEG score recompute
  20. 2026-07-02 05:27 UTCEG score recompute
  21. 2026-07-01 15:07 UTCEPSS rescore
  22. 2026-07-01 03:55 UTCEG score recompute
  23. 2026-06-30 23:22 UTCEPSS rescore
  24. 2026-06-30 02:22 UTCEG score recompute
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 8 more
  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-29 00:50 UTCEG score recompute
  3. 2026-06-28 14:07 UTCEPSS rescore
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 23:18 UTCEG score recompute
  7. 2026-06-26 21:45 UTCEG score recompute
  8. 2026-06-26 21:42 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-44731?
CVE-2026-44731 is a medium vulnerability published on June 26, 2026. OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, the web application's meetings filter feature leaks whether a given user ID corresponds to a valid account and discloses the user's full name, allowing an attacker to enumerate all existing user accounts…
When was CVE-2026-44731 disclosed?
CVE-2026-44731 was first published in the National Vulnerability Database on June 26, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44731 actively exploited?
CVE-2026-44731 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44731?
CVE-2026-44731 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-44731?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44731, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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