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Critical 9.8Published Aug 14, 2026

CVE-2026-73849emlog allows unauthenticated reinstallation via `install.php?action=reinstall`.

Updated under an hour ago ()

Does this affect you?

It affects emlog. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Emlog is an open source website building system. In 2.6.26 and earlier, install.php accepts action=reinstall without authentication and deliberately skips the already-installed check because the guard runs only when $act != 'reinstall'. A remote attacker can submit hostname, dbuser, dbpasswd, dbname, dbprefix, username, password, and email values to cause file_put_contents('config.php', $config) to overwrite the configuration with attacker-controlled database settings and create a new administrator account. No fixed version is available as of this review.

CVSS
9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-306
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Deferred
Record last updated
Aug 18, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
emlog emlog
emlog:emlog (from the name)
through 2.6.26
CNA record

References

  • x-refsource-confirm

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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