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CVE-2016-20053

Redaxo CMS 5.2 Cross-Site Request Forgery via users endpoint

Medium6.9Public exploitEPSS 0.15%
Published
Updated
Reserved
Assigned by
VulnCheck

Description

Redaxo CMS 5.2 contains a cross-site request forgery vulnerability that allows unauthenticated attackers to create administrative user accounts by tricking authenticated administrators into visiting malicious pages. Attackers can craft HTML forms targeting the users endpoint with hidden fields containing admin credentials and account parameters to add new administrator accounts without user consent.

Public exploit

A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.

Timeline

  1. ID reserved

    By VulnCheck

  2. Published

  3. · 2 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2016-20053, by who scored it
Scored byCVSSScoreVector
VulnCheckCNA (assigner)4.0Medium6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
VulnCheckCNA (assigner)3.1Medium5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVDNVD · Analyzed4.0Medium6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.15% · top 96% of all CVEs (8 Nov 2026)
CISA SSVC
Exploitation: poc · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.9.

Weakness

Affected products

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2016-20053 badge
[![CVE-2016-20053](https://cveledger.app/badge/CVE-2016-20053.svg)](https://cveledger.app/cve/CVE-2016-20053)

Record last updated .