All vulnerabilities
CVE-2026-111609

PKP Open Journal Systems through 3.5.0-5 Cross-Journal Subscription IDOR via updateSubscription

PKP Open Journal Systems
Open in ThreatlineRecord JSON
CVSS
5.1Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 21 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published16 Oct 2026Updated 21 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

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.

Text from CVE List

Affected versions 1

  • Open Journal Systemsaffected: all versions through 3.5.0-5CVE List

References 4