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Fencer Intel
medium 5.4

CVE-2017-15284 json

OctoberCMS Cross-Site Scripting

published 9y ago modified 4mo ago also GHSA-gvgf-fp4m-2hw6 , EUVD-2017-6741

cvss
5.4
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.0%
EPSS 4.0% chance of exploitation in 30 days, percentile 90%
public exploits
1
Exploit-DB

Summary

Cross-Site Scripting exists in OctoberCMS 1.0.425 (aka Build 425), allowing a least privileged user to upload an SVG file containing malicious code as the Avatar for the profile. When this is opened by the Admin, it causes JavaScript execution in the context of the Admin account.

Patch / fix

  • packagist october/rain 1.0.426

Is CVE-2017-15284 in your dependencies? 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. First public exploit (EDB-42978)
  2. Published

Exploit prediction

4.03% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-42978 OctoberCMS 1.0.425 (Build 425) - Cross-Site Scripting webapps, 2017-10-12
  • packetstormsecurity.com https://packetstormsecurity.com/files/144587/OctoberCMS-1.0.425-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 5.4 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
GitHub 3.0 5.4 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist october/rain
<1.0.426
1.0.426

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

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.