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CVE-2020-15249

15
FAUCET Score

CVE-2020-15249 describes a cross-site scripting (XSS) vulnerability in October CMS versions prior to 1.0.469, where authenticated backend users could upload unsanitized SVG files containing malicious JavaScript. While these files could execute if a target directly visited the SVG's URL, the backend itself did not render them in a way that would trigger execution. This vulnerability is rated as Medium severity (CVSS 5.4), requiring user interaction and low privileges for exploitation, with potential for limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.319, < 1.0.469CPE matchmatch criteria
cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

2.8LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.3
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 56th percentile among its peer group of 15,239 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: october/backendFixed in: 1.0.469
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-fx3v-553x-3c4qlow

Stored XSS by authenticated backend user with access to upload files

Nov 23, 2020

References

github.com / octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4
PatchThird Party Advisory
github.com / octobercms/october/security/advisories/GHSA-fx3v-553x-3c4q
Third Party Advisory