CVE•Published 2026-07-17•Modified 2026-07-30•0 articles on news•5 live references•NVD data

CVE-2026-49284Simplesamlphp · Simplesamlphp

Vulnerability data via NVD (ingested)

CVSS v3.1

7.1

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 95% of all CVEs

Weaknesses (CWE)

CWE-345Insufficient Verification of Data Authenticity

Description

SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking SubjectConfirmationData/InResponseTo, allowing a response issued by one trusted IdP to be bound to SP state created for another IdP and bypass flows that route users to a specific IdP, including deployments that set enable_unsolicited to false. This issue is fixed in versions 2.4.7 and 2.5.2.

Timeline

Published 2026-07-17

Modified 2026-07-30

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-49284

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Simplesamlphp Simplesamlphp"

All exposed Simplesamlphp Simplesamlphp instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Simplesamlphp"

HTTP body or banner mentions "Simplesamlphp" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-49284