CVE-2026-25892: Adminer has an Unauthenticated Persistent DoS via Array Injection in ?script=version Endpoint
vrana · adminer
Affected: vrana adminer · Exploitation: check available, not yet exploited
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 77% of scored CVEs
DescriptionCVE.org
Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load, openssl_verify() receives this array instead of string and throws TypeError, returning HTTP 500 to all users. Upgrade to Adminer 5.4.2.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- vrana · adminer>= 4.6.2, < 5.4.2
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
- CISA KEV
- Not listed
- Public check
- Adminer 4.6.2 - 5.4.1 Unauthenticated Persistent DoS · nuclei template in projectdiscovery/nuclei-templates
- Vendor
- vrana
- Published
- February 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-25892 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.