CVE-2023-28103 json
Prototype pollution in matrix-react-sdk
published 2023-03-28 3 y ago modified 2026-09-10 1 mo ago also GHSA-6g43-88cp-w5gv , EUVD-2023-0903
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
matrix-react-sdk is a Matrix chat protocol SDK for React Javascript. In certain configurations, data sent by remote servers containing special strings in key locations could cause modifications of the `Object.prototype`, disrupting matrix-react-sdk functionality, causing denial of service and potentially affecting program logic. This is fixed in matrix-react-sdk 3.69.0 and users are advised to upgrade. There are no known workarounds for this vulnerability. Note this advisory is distinct from GHSA-2x9c-qwgf-94xr which refers to a similar issue.
Patch / fix
- npm matrix-react-sdk 3.69.0
- matrix-react-sdk_project matrix-react-sdk 3.69.0
- riot-web Alpine 3.17 1.11.26-r0
- element-web Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 1.11.26-r0
alpine advisories ALPINE-CVE-2023-28103
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 20 mo ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
| NVD | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
| GitHub | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | matrix-react-sdk | <3.69.0 |
3.69.0 |
Affected products
- matrix-org matrix-react-sdk
Classification
- Weakness
-
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
References
-
github.com
/matrix-org/matrix-react-sdk/security/advisories/GHSA-6g43-88cp-w5gv
web, vendor-advisory
-
matrix.org
/blog/2023/03/28/security-releases-matrix-js-sdk-24-0-0-and-matrix-react-sdk-3-69-0
web, vendor-advisory
-
github.com
/matrix-org/matrix-react-sdk/security/advisories/GHSA-2x9c-qwgf-94xr
web
-
nvd.nist.gov
/vuln/detail/CVE-2023-28103
advisory
-
github.com
/matrix-org/matrix-react-sdk
package
Sources
- CVE List CVE-2023-28103
- GitHub Advisory GHSA-6g43-88cp-w5gv
- NVD CVE-2023-28103
Fencer Vulns 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.