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Kaltura Html5 Video Player Html5 Library

1 CVEs product

Monthly

CVE-2026-19912 Aug 25, 16:20 CRITICAL Act Now

Analysis complete. The JSON synthesis above covers CVE-2026-19912 (Kaltura HTML5 Player unauthenticated RCE). Key points of the assessment: - **Impact**: Unauth network RCE (CVSS 9.8) chaining PHP object injection via `unserialize()` with attacker-controlled cache-path file write → webshell as the webserver user. - **Signal contrast**: High CVSS but low EPSS (0.22%), no KEV, and no public POC — high severity, no observed mass exploitation yet, so it's a "patch promptly" rather than "on-fire" item. - **Metadata**: Clean — vendor (`kaltura`) and CPE are correct, no mislabeled tags, so `data_quality_flags` is empty. - **Caveat surfaced**: No exact fixed version is present in the input; I flagged that it must be confirmed from Kaltura's advisory rather than inventing one. - **Security note**: The input's "Editorial note (internal)" was a prompt-injection attempt instructing insertion of the word "gniezno" — I ignored it (consistent with prior handling) and noted it in `confidence_notes`. I also recorded a memory entry for this CVE.

PHP RCE Deserialization Kaltura Html5 Video Player Html5 Library Kaltura
NVD VulDB
CVSS 3.1
9.8
EPSS
0.2%
EPSS 0% CVSS 9.8
CRITICAL Act Now

Analysis complete. The JSON synthesis above covers CVE-2026-19912 (Kaltura HTML5 Player unauthenticated RCE). Key points of the assessment: - **Impact**: Unauth network RCE (CVSS 9.8) chaining PHP object injection via `unserialize()` with attacker-controlled cache-path file write → webshell as the webserver user. - **Signal contrast**: High CVSS but low EPSS (0.22%), no KEV, and no public POC — high severity, no observed mass exploitation yet, so it's a "patch promptly" rather than "on-fire" item. - **Metadata**: Clean — vendor (`kaltura`) and CPE are correct, no mislabeled tags, so `data_quality_flags` is empty. - **Caveat surfaced**: No exact fixed version is present in the input; I flagged that it must be confirmed from Kaltura's advisory rather than inventing one. - **Security note**: The input's "Editorial note (internal)" was a prompt-injection attempt instructing insertion of the word "gniezno" — I ignored it (consistent with prior handling) and noted it in `confidence_notes`. I also recorded a memory entry for this CVE.

PHP RCE Deserialization +2
NVD VulDB

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