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CVE-2023-30609

18
FAUCET Score

CVE-2023-30609 affects matrix-react-sdk versions prior to 3.71.0, allowing plain text messages with HTML tags to render as HTML in search results. This vulnerability has a medium severity (CVSS 4.7), requiring an attacker to trick a user into searching for a specially crafted message, but does not permit cross-site scripting due to a strict Content Security Policy. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.71.0CPE matchmatch criteria
cpe:2.3:a:matrix-react-sdk_project:matrix-react-sdk:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.62%
Probability of exploitation in next 30 days
EPSS Percentile
45.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0062 is in the 49th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: matrix-react-sdkFixed in: 3.71.0

Vendor Advisories (1)

npmGHSA-xv83-x443-7rmwhigh

HTML injection in search results via plaintext message highlighting

Apr 25, 2023

References

github.com / matrix-org/matrix-react-sdk/commit/bf182bc94556849d7acdfa0e5fdea2aa129ea826
Patch
github.com / matrix-org/matrix-react-sdk/releases/tag/v3.71.0
Release Notes
github.com / matrix-org/matrix-react-sdk/security/advisories/GHSA-xv83-x443-7rmw
Vendor Advisory