CVE-2021-21311

unknown KEV

Published 2021-02-11 · Modified 2025-09-29

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CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:H

CVSS v4 NEW

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not yet in upstream

VIR risk

1.5

Description

Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.

CISA KEV

Vendor: Adminer
Product: Adminer
Due date: 2025-10-20

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

OS impact

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`4.7.9-1`
sid	Fixed	`4.7.9-1`
forky	Fixed	`4.7.9-1`
bullseye	Fixed	`4.7.9-1`
bookworm	Fixed	`4.7.9-1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
Packagist	vrana/adminer	`<4.7.9`	`4.7.9`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.