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CVE-2026-44736

OpenProject is open-source, web-based project management software. Prior to 17.4.0, the GET /api/v3/relations endpoint allows any authenticated user to retrieve relations — and the subject (title) of work packages they have no permission to view — by supplying an arbitrary work package ID in the involved, fromId, or toId filter. This bypasses the Relation.visible scope due to a flawed performance optimization in RelationQuery. This vulnerability is fixed in 17.4.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:72dade5553f37bb804f14dc3764035829acfd0519e07077b47f6270348e09cc9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-836","description":"CWE-836: Use of Password Hash Instead of Password for Authentication","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"openproject","vendor":"opf","versions":[{"status":"affected","version":"< 17.4.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-836","description":"CWE-836: Use of Password Hash Instead of Password for Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645","tags":["x_refsource_CONFIRM"],"url":"https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51bbd086d467e3cbb6547c3a707c630a6efc2f33866e7548a4da56b8ba1117ae · sha256:14c13db6768048fb… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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