OpenProject before 6.1.6 and 7.x before 7.0.3 mishandles session expiry, which allows remote attackers to perform APIv3 requests indefinite…

published 2017-07-26 9y ago modified 2026-06-17 4mo ago also EUVD-2017-3279

cvss: 8.1; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits: 0; none known

OpenProject before 6.1.6 and 7.x before 7.0.3 mishandles session expiry, which allows remote attackers to perform APIv3 requests indefinitely by leveraging a hijacked session.

Patch / fix

links 1

github.com/opf/openproject@0fdd757 commit

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Exploit prediction

1.42% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.1	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-613 DEPRECATED: Insufficient Session Expiration

References

github.com /opf/openproject/commit/0fdd7578909d2ec50abc275fc4962e99566437ee
patch
openproject.org /openproject-6-1-6-released-security-fix/
vendor-advisory
openproject.org /openproject-7-0-3-released/
vendor-advisory

Sources

CVE List CVE-2017-11667
NVD CVE-2017-11667

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