The getUserzoneCookie function in Kaltura before 13.2.0 uses a hardcoded cookie secret to validate cookie signatures, which allows remote attackers to bypass an intended protection mechanism and consequently conduct PHP object injection attacks and execute arbitrary PHP code via a crafted userzone cookie.
CVE-2017-14143
CRITICALNVD 9.89.8—Weaponized
EchelonGraph scoreMEDIUM confidence
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
- High exploitation likelihood — EPSS 75%
CISA-KEV: Not listedEPSS: 75%CVSS: 9.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 99.5%
- KEV
- Not listed
Published
September 19, 2017
Last Modified
May 13, 2026
Advisory Details (5)
Auto-updated May 19, 2026⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🟡 PoC Available
Kaltura - Remote PHP Code Execution over Cookie (Metasploit) - PHP remote Exploit
https://www.exploit-db.com/exploits/43876/generic🟡 PoC Available
Kaltura < 13.2.0 - Remote Code Execution - PHP webapps Exploit
https://www.exploit-db.com/exploits/43028/generic🔴 Active Exploitation
generic
remove unsafe unserialize · kaltura/server@6a6d143 · GitHub
https://github.com/kaltura/server/commit/6a6d14328b7a1493e8c47f9565461e5f88be20c9#diff-0770640cc76112cbf77bebc604852682Frequently asked(5)
What is CVE-2017-14143?
CVE-2017-14143 is a critical vulnerability published on September 19, 2017. The getUserzoneCookie function in Kaltura before 13.2.0 uses a hardcoded cookie secret to validate cookie signatures, which allows remote attackers to bypass an intended protection mechanism and consequently conduct PHP object injection attacks and execute arbitrary PHP code via a crafted userzone…
When was CVE-2017-14143 disclosed?
CVE-2017-14143 was first published in the National Vulnerability Database on September 19, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-14143 actively exploited?
CVE-2017-14143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-14143?
CVE-2017-14143 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-14143?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-14143, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2017-14143
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