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Fencer Intel
medium 5.3

CVE-2017-18195 json

An issue was discovered in tools/conversations/view_ajax.php in Concrete5 before 8.3.0.

published 8y ago modified 4mo ago also EUVD-2017-9329

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.1%
EPSS 11.1% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

An issue was discovered in tools/conversations/view_ajax.php in Concrete5 before 8.3.0. An unauthenticated user can enumerate comments from all blog posts by POSTing requests to /index.php/tools/required/conversations/view_ajax with incremental 'cnvID' integers.

Patch / fix

  • concretecms concrete_cms 8.3.0

Is CVE-2017-18195 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. Published
  2. First public exploit (EDB-44194)

Exploit prediction

11.05% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-44194 Concrete5 CMS < 8.3.0 - Username / Comments Enumeration webapps, 2018-02-27
  • github.com https://github.com/r3naissance/NSE/blob/master/http-vuln-cve2017-18195.nse referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.