CVE-2017-6905 — An issue was discovered in concrete5 <= 5

An issue was discovered in concrete5 <= 5.6.3.4. The vulnerability exists due to insufficient filtration of user-supplied data (disable_choose) passed to the "concrete5-legacy-master/web/concrete/tools/files/search_dialog.php" URL. An attacker could execute arbitrary

01What is this vulnerability?

An issue was discovered in concrete5 <= 5.6.3.4. The vulnerability exists due to insufficient filtration of user-supplied data (disable_choose) passed to the "concrete5-legacy-master/web/concrete/tools/files/search_dialog.php" URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-03-15T00:59:00.160
• Last modified: 2026-05-13T00:24:29.033

09References

• www.securityfocus.com — http://www.securityfocus.com/bid/96891
• github.com — https://github.com/Mnkras/concrete5/commit/3eab581ab670982676e9dabddc9ad43939117…
• github.com — https://github.com/concrete5/concrete5-legacy/commit/2b16399ce3e962a8c27fb3ec14b…
• github.com — https://github.com/concrete5/concrete5-legacy/issues/1947
• www.securityfocus.com — http://www.securityfocus.com/bid/96891
• github.com — https://github.com/Mnkras/concrete5/commit/3eab581ab670982676e9dabddc9ad43939117…
• github.com — https://github.com/concrete5/concrete5-legacy/commit/2b16399ce3e962a8c27fb3ec14b…
• github.com — https://github.com/concrete5/concrete5-legacy/issues/1947