CVE-2026-111609
PKP Open Journal Systems through 3.5.0-5 Cross-Journal Subscription IDOR via updateSubscription
CVSS Score
3.8
EPSS Score
0.0%
EPSS Percentile
0th
PKP Open Journal Systems through 3.5.0-5 contains an insecure direct object reference vulnerability that allows journal or subscription managers to access other journals' subscriptions by supplying arbitrary subscription ids. Attackers can enumerate sequential ids through editSubscription to view subscriber details and use updateSubscription to reassign subscriptions to their own journal, revoking victims' access.
| CWE | CWE-639 |
| Vendor | pkp |
| Product | open journal systems |
| Published | Oct 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
PKP / Open Journal Systems
0 ≤ 3.5.0-5
References
hackmd.io: https://hackmd.io/@hieuPenguinnn/ojs-subscription-form-cross-journal-idor github.com: https://github.com/pkp/ojs/blob/3_5_0-5/controllers/grid/subscriptions/IndividualSubscriptionForm.php#L47-L51 github.com: https://github.com/pkp/ojs/blob/3_5_0-5/controllers/grid/subscriptions/InstitutionalSubscriptionForm.php#L57-L62 vulncheck.com: https://www.vulncheck.com/advisories/pkp-open-journal-systems-through-3.5.0-5-cross-journal-subscription-idor-via-updatesubscription
Credits
hieuPenguinnn