CVE catalog
CVE-2026-56704
Adminer before 5.4.3 inserts unsanitized database server version strings into script tags with valid CSP nonces without proper validation. Attackers controlling a rogue MySQL server can return crafted
- Severity
- Medium · CVSS 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.34% · Oct 25, 2026
Adminer before 5.4.3 inserts unsanitized database server version strings into script tags with valid CSP nonces without proper validation. Attackers controlling a rogue MySQL server can return crafted version strings that break out of the JavaScript context and execute arbitrary code, bypassing Content Security Policy protections.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | adminer | sid | 6.1.2-1 | fixed |
| Debian | adminer | forky | 6.1.0-1 | fixed |
| Debian | adminer | trixie | 5.2.1+dfsg-1 | vulnerable |
| Debian | adminer | bookworm | 4.8.1-1 | vulnerable |
| Ubuntu | adminer | pro | 4.7.2-1 | vulnerable |
| Ubuntu | adminer | pro | 4.7.4-1 | vulnerable |
| Ubuntu | adminer | pro | 4.7.5-1 | vulnerable |
| Ubuntu | adminer | pro | 4.7.6-1 | vulnerable |
| Ubuntu | adminer | pro | 4.7.6-1ubuntu0.1~esm1 | vulnerable |
| Ubuntu | adminer | 22.04 | 4.7.9-2 | vulnerable |
| Ubuntu | adminer | 22.04 | 4.8.1-1 | vulnerable |
| Ubuntu | adminer | 24.04 | 4.8.1-1 | vulnerable |
| Ubuntu | adminer | 24.04 | 4.8.1-1ubuntu1 | vulnerable |
| Ubuntu | adminer | 24.04 | 4.8.1-2 | vulnerable |
| Ubuntu | adminer | 26.04 | 5.2.1+dfsg-1 | vulnerable |
| Ubuntu | adminer | 26.04 | 5.3.0+dfsg-1 | vulnerable |
| Ubuntu | adminer | 26.04 | 5.4.0+dfsg-1 | vulnerable |
| Ubuntu | adminer | 26.04 | 5.4.1+dfsg-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | adminer | source | sid | 5.4.3+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | adminer | source | forky | 5.4.3+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | adminer | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | adminer | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [adminer]Affected
Details (2)
4.8.1-1· all · bookwormAffected
nvd · adminer · debian · bookworm; nvd · adminer · debian · 12
4.8.1-1· all · bookwormAffected
nvd · adminer · debian · bookworm; nvd · adminer · debian · 12
[Debian 13 (Trixie)]
- [adminer]Affected
Details (2)
5.2.1+dfsg-1· all · trixieAffected
nvd · adminer · debian · 13
5.2.1+dfsg-1· all · trixieAffected
nvd · adminer · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-56704]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-56704]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-56704]
- [https://security-tracker.debian.org/tracker/CVE-2026-56704]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]