ZeroHour

Search: “loaders”

3 stories in the last 30d

PostgreSQL Hit by 12-Year-Old Vulnerability Allowing Server Takeover

PostgreSQL flaw CVE-2026-6471, present since 2014, lets low-privilege replication accounts execute code and take over database servers; patches released.

Cyera researchers disclosed PostGREShell (CVE-2026-6471, CVSS 7.2), a missing-authorization bug in PostgreSQL logical decoding that lets users with REPLICATION privilege dlopen arbitrary files and execute code as the server account. The flaw affects PostgreSQL 9.4 through 18 and can yield privilege escalation, permanent superuser access and persistent backdoors on Windows, Linux and macOS. Fixes are available in versions 18.6, 17.11, 16.15, 15.19 and 14.24. Defenders should update and remove unnecessary Replication privileges.

Security Affairs · 12d agoVulnerabilityCVE-2026-64711

PostgreSQL Fixes 12-Year-Old Logical Decoding Flaw Enabling Replication-Role Code Execution

PostgreSQL fixed CVE-2026-6471 (CVSS 7.2), a 12-year-old logical decoding flaw letting replication-role accounts execute arbitrary code as the database OS user.

PostgreSQL patched CVE-2026-6471 (CVSS 7.2), a flaw present since logical decoding shipped in 9.4 (2014) that lets an account with the REPLICATION attribute run arbitrary code as the database server's OS user when wal_level is logical. Versions before 18.6, 17.11, 16.15, 15.19, and 14.24 are affected; exploitation requires such an account, which backup, CDC, and monitoring tooling routinely holds. The fix adds an output_plugin_libraries whitelist, so administrators using non-default plugins such as wal2json and decoderbufs must add them and reload configuration after updating. Cyera Research, whose write-up names the flaw PostGREShell, demonstrated escalating a replication user to superuser with persistence; no PoC or KEV entry existed as of September 4.

The Hacker News · 12d agoVulnerabilityCVE-2026-64711

Unpatched Kaltura mwEmbed Flaws Could Let Remote Attackers Read Files and Run Code

CERT/CC disclosed unpatched Kaltura mwEmbed flaws CVE-2026-19913 and CVE-2026-19912 allowing unauthenticated file reads and remote code execution.

CERT/CC disclosed two unpatched flaws in Kaltura's mwEmbed HTML5 player library, both rooted in unsafe deserialization in mwEmbedLoader.php and exploitable without authentication. CVE-2026-19913 (reporter-scored 9.1) reflects local file contents back via the ServiceUrl parameter, exposing secrets in local.ini; CVE-2026-19912 (reporter-scored 10.0) achieves PHP code execution by writing attacker-controlled objects into web-accessible directories via the uiconf_id parameter. No patch exists and CERT/CC could not reach Kaltura; affected releases include html5lib v2.45, v2.103 and earlier, with the shared multi-tenant CDN hosts also impacted. No exploitation or KEV listing was reported as of August 25, 2026.