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No exploitation reportedFix available

CVE-2023-28131

No exploitation reported by the sources we read.

  • Published2023-04-24
  • Fixed in48.0.0
  • WeaknessCWE-522

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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).

Timeline

dates in UTC
  1. 2023-04-2405:15CVE publishedNVD
  2. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-28131?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-28131?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Expo expo software development kit
BranchAffectedFixed in
48.0≥ 45.0.0, < 48.0.048.0.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Expo expo software development kit to 48.0.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-02-04
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.19.62025-02-04
  • NVDCVSS 3.19.6read 2026-10-23
  • CISA-ADPweakness (CWE)CWE-5222025-02-04
  • NVDweakness (CWE)CWE-522read 2026-10-23
  • FIRST EPSSEPSS score23.2 %read 2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Published
2023-04-24
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-28131?

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).

Is CVE-2023-28131 actively exploited?

Active exploitation of CVE-2023-28131 has not been confirmed. Its EPSS score was 23.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-28131?

CVE-2023-28131 has a CVSS v3 base score of 9.6 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

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