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🛡️ CVE-2021-47853 — phppgadmin

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-78 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

phpPgAdmin contains a remote command execution vulnerability

phpPgAdmin 7.13.0 contains a remote command execution vulnerability that allows authenticated attackers to execute arbitrary system commands through SQL query manipulation. Attackers can create a custom table, upload a malicious .txt file, and use the COPY FROM PROGRAM command to execute operating system commands with the application's privileges.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Attack requirements: None — no deployment-specific condition has to hold.
  • Privileges required: High — administrative rights are needed first.
  • User interaction: None — nobody has to be tricked into anything.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2021-47853 is classified as CWE-78: OS Command Injection. Untrusted input reaches a shell command without neutralisation, so an attacker can run arbitrary operating system commands.

Affected software

CVE-2021-47853 is recorded against 1 package.

  • phppgadmin/phppgadmin

Timeline and source

Published on 21 January 2026 and last revised on 3 February 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Package)
github.com (Web)
www.exploit-db.com (Web)
www.vulncheck.com (Web)

Other advisories for this package

phppgadmin/phppgadmin has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-78: OS Command Injection) in other software:

CVE-2021-47853 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE CWE-78
Public Exploit ✅ No
Source OSV
Published 2026-01-21
Updated 2026-08-20
Modified 2026-02-03
Fix URL N/A

Affected Packages

Software From version Fixed in
phppgadmin/phppgadmin — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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