CRITICALCVSS v3.1 9.8Vulnerability
CVE-2021-48016
DedeCMS through 5.8.1-beta contains a PHP code injection vulnerability in ShowMsg() where the HTTP Referer header is written into a DedeTemplate string and included. Unauthenticated attackers can send a crafted Referer to /plus/flink.php?dopost=save with an empty validate code to execute arbitrary PHP and system commands. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.
Properties
- Cvss score
- 9.8
- First seen
- 2026-10-22T10:57:31+00:00
- Last seen
- 2026-10-22T10:57:31+00:00
- Euvd assigner
- VulnCheck
- Retrieved at
- 2026-10-22T22:16:40+00:00
- Src batch id
- euvd-20261022T123402Z-b4e4e3
- Source url
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-34899
- Score
- 9.8
- Euvd base score version
- 4.0
- Fetched at
- 2026-10-22T12:34:21+00:00
- Euvd vendor
- DedeCMS
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-10-22T12:34:22+00:00
- Euvd base score
- 9.3
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Content hash
- 7e88297ddbcbc41989d1dd4fff06e19e5f510b4597f33b9e2fdee995306fb6c4
- Published at
- 2026-10-22T11:17:04.690
- Last modified
- 2026-10-22T17:40:46.877
- Euvd updated
- 2026-10-22T10:57:31+00:00
- Euvd epss pct
- 0
Related Entities (1)
HAS_WEAKNESS (1)
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