A vulnerability in the expo.io framework allows an attacker to take over accounts and steal credentials on an application/website that configured the "Expo AuthSession Redirect Proxy" for social sign-in
Published Apr 24, 2023
9.6
CRITICALCVSS 3.1
EPSS 23.16%
Description
A vulnerability in the expo.io framework allows an attacker to take over accounts and steal credentials on an application/website that configured the "Expo AuthSession Redirect Proxy" for social sign-in. This can be achieved once a victim clicks a malicious link. The link itself may be sent to the victim in various ways (including email, text message, an attacker-controlled website, etc).
Affected products
-
- Version All versions prior to SDK 48.* (Affected SDK 45.*, 46.* and 47.*)StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Expo.io | Expo AuthSession module | n/a |
|
- ≥ 45.0.0 · < 48.0.0
No data.
No Red Hat product state for this CVE.
expo
npm
Introduced 0 Fixed 48.0.0
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | expo | 0 | 48.0.0 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Feb 4, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2023–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 23.16% (0.23165) | 97.70th | v5 (v2026.06.15) |
| Jun 15, 2026 | 23.16% (0.23165) | 97.47th | v5 (v2026.06.15) |
| Apr 25, 2026 | 1.30% (0.01296) | 79.77th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.28% (0.00284) | 49.76th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.32% (0.00315) | 71.16th | v3 (v2023.03.01) |
| May 26, 2024 | 0.27% (0.00266) | 67.58th | v3 (v2023.03.01) |
| Apr 30, 2024 | 0.24% (0.00237) | 61.37th | v3 (v2023.03.01) |
| Mar 24, 2024 | 0.13% (0.00126) | 46.25th | v3 (v2023.03.01) |
| May 3, 2023 | 0.09% (0.00091) | 37.66th | v3 (v2023.03.01) |
| Apr 24, 2023 | 0.04% (0.00043) | 7.02th | v3 (v2023.03.01) |
References (4)
- https://blog.expo.dev/security-advisory-for-developers-using-authsessions-useproxy-options-and-auth-expo-io-e470fe9346df MitigationThird Party Advisory
- https://github.com/advisories/GHSA-wr5g-q49g-548w Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2023-28131
- https://www.darkreading.com/endpoint/oauth-flaw-in-expo-platform-affects-hundreds-of-third-party-sites-apps
Change history (0)
No recorded changes yet.