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CVE-2017-11667

26
FAUCET Score

CVE-2017-11667 affects OpenProject versions before 6.1.6 and 7.x before 7.0.3, stemming from improper session expiry handling. This high-severity vulnerability (CVSS 8.1) allows remote attackers to indefinitely perform APIv3 requests using a hijacked session, leading to potential compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.1.5CPE matchmatch criteria
cpe:2.3:a:openproject:openproject:*:*:*:*:*:*:*:*
7.0.0CPE matchmatch criteria
cpe:2.3:a:openproject:openproject:7.0.0:*:*:*:*:*:*:*
7.0.1CPE matchmatch criteria
cpe:2.3:a:openproject:openproject:7.0.1:*:*:*:*:*:*:*
7.0.2CPE matchmatch criteria
cpe:2.3:a:openproject:openproject:7.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 29th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

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