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Not in CISA KEV
HIGH severity

CVE-2021-43008 — adminer

HIGH

CVE-2021-43008 is a high-severity (CVSS 7.5) vulnerability in vrana/adminer. 4 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for vrana/adminer — see the affected versions and patch details below.

Files or Directories Accessible to External Parties in Adminer

Also known asGHSA-rxfq-3vpc-vv72
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
4 known
Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
13.6%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs97th percentile — riskier than 97% of all scored CVEsHighest risk
0.00%33.3%66.7%100.0%83.5%13.6%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘vrana/adminer

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Improper Access Control in Adminer versions 1.12.0 to 4.6.2 (fixed in version 4.6.3) allows an attacker to achieve Arbitrary File Read on the remote server by requesting the Adminer to connect to a remote MySQL database.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistvrana/adminer≥ 1.12.0&&< 4.6.34.6.3composer require vrana/adminer:^4.6.3

Affected Products

2 products · 2 configurations
Application
admineradminer
≥ 1.12.0 && ≤ 4.6.2
range
OS
debian linuxdebian
1 version
9.0
Exploits & PoCs
4

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Improper Access Control in Adminer versions 1.12.0 to 4.6.2 (fixed in ve…

github.comGithubDec 2021

Report on sansec.io

sansec.ioNVDApr 2022

Report on podalirius.net

podalirius.netNVDApr 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for vrana/adminer, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update vrana/adminer to 4.6.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-43008 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

Improper Access Control in Adminer versions 1.12.0 to 4.6.2 (fixed in version 4.6.3) allows an attacker to achieve Arbitrary File Read on the remote server by requesting the Adminer to connect to a remote MySQL database.
O3 Security · Impact-Aware SCA

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CVE-2021-43008: adminer — Fixed in 4.6.3