IBM PowerSC cross-resource origin sharing

published 2024-02-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-55671

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

IBM PowerSC 1.3, 2.0, and 2.1 uses Cross-Origin Resource Sharing (CORS) which could allow an attacker to carry out privileged actions and retrieve sensitive information as the domain name is not being limited to only trusted domains. IBM X-Force ID: 275130.

Patch / fix

links 1

ibm.com/support/pages/node/7113759 advisory

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-07-12)

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

IBM PowerSC

Classification

Weakness

CWE-942 Permissive Cross-domain Security Policy with Untrusted Domains
CWE-697 Incorrect Comparison

References

ibm.com /support/pages/node/7113759
vendor-advisory, patch
exchange.xforce.ibmcloud.com /vulnerabilities/275130
vdb-entry, vendor-advisory

Sources

CVE List CVE-2023-50940
NVD CVE-2023-50940

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.

Summary