CVE-2021-29625

Adminer is open-source database management software. A cross-site scripting vulnerability in Adminer versions 4.6.1 to 4.8.0 affects users of MySQL, MariaDB, PgSQL and SQLite. XSS is in most cases prevented by strict CSP in all modern browsers. The only exception is when Adminer is using a `pdo_` extension to communicate with the database (it is used if the native extensions are not enabled). In browsers without CSP, Adminer versions 4.6.1 to 4.8.0 are affected. The vulnerability is patched in version 4.8.1. As workarounds, one can use a browser supporting strict CSP or enable the native PHP extensions (e.g. `mysqli`) or disable displaying PHP errors (`display_errors`).

• CWE-79

• https://github.com/vrana/adminer/commit/4043092ec2c0de2258d60a99d0c5958637d051a7Patch, Third Party Advisory
• https://github.com/vrana/adminer/security/advisories/GHSA-2v82-5746-vwqcPatch, Third Party Advisory
• https://sourceforge.net/p/adminer/bugs-and-features/797/Exploit, Product, Third Party Advisory
• https://github.com/vrana/adminer/commit/4043092ec2c0de2258d60a99d0c5958637d051a7Patch, Third Party Advisory
• https://github.com/vrana/adminer/security/advisories/GHSA-2v82-5746-vwqcPatch, Third Party Advisory
• https://sourceforge.net/p/adminer/bugs-and-features/797/Exploit, Product, Third Party Advisory

Published

May 19, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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