Read the docs
TI-2025-28520 Aliases CVE-2025-43960GHSA-mqh4-2mm8-g7w9

Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory…

Priority MEDIUM 45CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory consumption) via a crafted serialized payload (e.g., using s:1000000000), leading to a PHP Object Injection issue. Remote, unauthenticated attackers can trigger this by sending a malicious serialized object, which forces excessive memory usage, rendering Adminer’s interface unresponsive and causing a server-level DoS. While the server may recover after several minutes, multiple simultaneous requests can cause a complete crash requiring manual intervention.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00735 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—vrana/adminer (Packagist)up to 4.8.1—No fix listedGHSA-mqh4-2mm8-g7w9
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • vrana/adminer (Packagist) Vendor— Affected up to 4.8.1 Fixed in — No fix listed GHSA-mqh4-2mm8-g7w9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:adminer:adminer:4.8.1:*:*:*:*:*:*:*4.8.1VulnerableAdminer
  • cpe:2.3:a:adminer:adminer:4.8.1:*:*:*:*:*:*:* Versions 4.8.1 Vulnerable ·Adminer

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-43960
  2. 2026-10-03 Alias added: GHSA-mqh4-2mm8-g7w9

References

Exploit 1

Advisory 1

Other 4

  • TI-2021-04411 SSRF in adminer KEVCVSS 3.1HIGH 7.2
  • TI-2018-05526 Adminer through 4.3.1 has SSRF via the server parameter. CVSS 3.0CRITICAL 9.8
  • TI-2021-19077 Improper Access Control in Adminer versions 1.12.0 to 4.6.2 (fixed in version 4.6.3)… CVSS 3.1HIGH 7.5
  • TI-2021-10333 XSS in doc_link CVSS 3.1HIGH 7.5
  • TI-2026-20931 Adminer has an Unauthenticated Persistent DoS via Array Injection in ?script=version Endpoint CVSS 3.1HIGH 7.5
  • TI-2020-18079 Adminer through 4.7.8 allows XSS via the history parameter to the default URI. CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences