CVE-2018-18307 — A Stored XSS vulnerability has been discovered in version 4
A Stored XSS vulnerability has been discovered in version 4.1.0 of AlchemyCMS via the /admin/pictures image field. NOTE: the vendor's position is that this is not a valid report: "The researcher used an authorized cookie to perform the request to a password-protected ro
Published
2018-10-16T00:00:00.000Z
Last modified
2025-08-29T15:03:47.555Z
01What is this vulnerability?
A Stored XSS vulnerability has been discovered in version 4.1.0 of AlchemyCMS via the /admin/pictures image field. NOTE: the vendor's position is that this is not a valid report: "The researcher used an authorized cookie to perform the request to a password-protected route. Without that session cookie, the request would have been rejected as unauthorized."
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
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: 2018-10-16T00:00:00.000Z
- Last modified: 2025-08-29T15:03:47.555Z
09References
- packetstormsecurity.com — http://packetstormsecurity.com/files/149787/Alchemy-CMS-4.1-Stable-Cross-Site-Sc…
- github.com — https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchem…
- github.com — https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchem…
- github.com — https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchem…
- www.exploit-db.com — https://www.exploit-db.com/exploits/45601
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