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CVE-2026-23646

OpenProject is an open-source, web-based project management software. Users of OpenProject versions prior to 16.6.5 and 17.0.1 have the ability to view and end their active sessions via Account Settings → Sessions. When deleting a session, it was not properly checked if the session belongs to the user. As the ID that is used to identify these session objects use incremental integers, users could iterate requests using `DELETE /my/sessions/:id` and thus unauthenticate other users. Users did not h
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:96dabc00de6a83582b86946496281e576c10543239c49eb3b59d59c314574ed8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"openproject","vendor":"opf","versions":[{"status":"affected","version":"< 16.6.5"},{"status":"affected","version":"= 17.0.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:96a577e8032e5ac4f0f74c2baec83b7ef7d20bacbb7115fcb83ff399b232a5ed · sha256:6ba8edda57c5f054… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:96a577e8032e5ac4f0f74c2baec83b7ef7d20bacbb7115fcb83ff399b232a5ed · sha256:6ba8edda57c5f054… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-488","description":"CWE-488: Exposure of Data Element to Wrong Session","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:96a577e8032e5ac4f0f74c2baec83b7ef7d20bacbb7115fcb83ff399b232a5ed · sha256:6ba8edda57c5f054… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/opf/openproject/releases/tag/v16.6.5","tags":["x_refsource_MISC"],"url":"https://github.com/opf/openproject/releases/tag/v16.6.5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:96a577e8032e5ac4f0f74c2baec83b7ef7d20bacbb7115fcb83ff399b232a5ed · sha256:6ba8edda57c5f054… · /containers/cna/references/1
{"name":"https://github.com/opf/openproject/releases/tag/v17.0.1","tags":["x_refsource_MISC"],"url":"https://github.com/opf/openproject/releases/tag/v17.0.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:96a577e8032e5ac4f0f74c2baec83b7ef7d20bacbb7115fcb83ff399b232a5ed · sha256:6ba8edda57c5f054… · /containers/cna/references/2
{"name":"https://github.com/opf/openproject/security/advisories/GHSA-w422-xf8f-v4vp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/opf/openproject/security/advisories/GHSA-w422-xf8f-v4vp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:96a577e8032e5ac4f0f74c2baec83b7ef7d20bacbb7115fcb83ff399b232a5ed · sha256:6ba8edda57c5f054… · /containers/cna/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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